NASA
The Marshall Star for October 30, 2024
Editor’s Note: Starting Nov. 4, the Office of Communications at NASA’s Marshall Space Flight Center will no longer publish the Marshall Star on nasa.gov. The last public issue will be Oct. 30. To continue reading Marshall news, visit nasa.gov/marshall.
Marshall Team Members View Progress Toward Future Artemis FlightsBlake Stewart, lead of the Thrust Vector Control Test Laboratory inside Building 4205 at NASA’s Marshall Space Flight Center, explains how his team tests the mechanisms that steer engine and booster nozzles of NASA’s SLS (Space Launch System) rocket to a group of Marshall team members Oct. 24. The employees were some of the more than 500 team members who viewed progress toward future Artemis flights on bus tours offered by the SLS Program. Building 4205 is also home to the Propulsion Research and Development Laboratory that includes 26 world-class labs and support areas that help the agency’s ambitious goals for space exploration. The Software Integration Lab and the Software Integration Test Facility are among the labs inside supporting SLS that employees visited on the tour. (NASA/Sam Lott)
A group of Marshall team members gather below the development test article for the universal stage adapter that will be used on the second variant of SLS, called Block 1B. The universal stage adapter is located inside one of the high bays in building 4619. The universal stage adapter will connect the Orion spacecraft to the SLS exploration upper stage. With the exploration upper stage, which will be powered by four RL10-C3 engines, SLS will be capable of lifting more than 105 metric tons (231,000 pounds) from Earth’s surface. This extra mass capability enables SLS to send multiple large payloads to the Moon on the same launch. (NASA/Sam Lott)
Marshall team members view the Orion Stage Adapters for the Artemis II and Artemis III test flights inside Building 4708. The Orion Stage Adapter, built at Marshall, connects the rocket’s interim cryogenic propulsion stage to the Orion spacecraft. The Orion Stage Adapter for Artemis II is complete and ready to be shipped to Kennedy Space Center. The Oct. 24 tours featured four stops that also included opportunities to see the Artemis III launch vehicle stage adapter, and the development test article for the SLS Block 1B universal stage adapter that will begin flying on Artemis IV. Additionally, programs and offices such as the Human Landing Systems Development Office and the Science and Technology Office hosted exhibits in the lobby of Building 4220, where employees gathered for the tours. (NASA/Jonathan Deal)
Center Commemorates National Disability Employment Awareness MonthBy Serena Whitfield
In conjunction with National Disability Employment Awareness Month, NASA’s Marshall Space Flight Center held anagencywide virtual event hosted by the Office of Diversity and Equal Opportunity on Oct. 24.
Marshall team members watched the Webex event in Building 4221.
From left, Tora Henry, director of the Office of Diversity and Equal Opportunity at Marshall, Chip Dobbs, supply management specialist at Marshall, and Marshall Associate Director Roger Baird pause for a photo following the Oct. 24 virtual event the center hosted as part of National Disability Awareness Month. NASA/Serena WhitfieldIn alignment with the month’s national theme, “Access to Good Jobs for All,” the program highlighted the perspectives of people with disabilities in the workplace as they navigate the work lifecycle – from applying, to onboarding, career growth and advancement, and day-to-day engagements.
The event began with Marshall Associate Director Roger Baird welcoming NASA team members.
“NASA is dedicated to inclusive hiring practices and providing pathways for good jobs and career success for all employees, including workers with disabilities,” Baird said. “Some ways we do this is through targeted recruitment of qualified individuals with disabilities through accessible vacancy announcements, outreach to students with disabilities, and community partnerships.”
NASA also utilizes Schedule A Authority, a non-competitive Direct Hiring Authority to hire people with disabilities without competition.
Baird introduced event moderator Joyce Meier, logistics manager at Marshall, who welcomed panelists Casey Denham, Kathy Clark, Paul Spann, and Paul Sullivan, all NASA team members. The panelists from the disability community discussed their work lifecycles, lessons learned in the workplace, and shared a demonstration on colorblindness and its impact.
Denham discussed some of the best practices for onboarding employees with neurodiversity, a term used to describe people whose brains develop or work differently than the typical brain.
Marshall team members watch the agencywide virtual event commemorating National Disability Employment Awareness Month. NASA/Serena WhitfieldClark talked about what can be done to continue raising awareness and advocating for disability rights. She said NASA empowers its workforce with knowledge so they can be informed allies to team members with disabilities and foster a safe and inclusive working environment.
Spann gave insight into practical steps employers can take to accommodate candidates with deafness, and Sullivan spoke about some key considerations NASA managers should keep in mind to make the job application process more accessible to candidates with low vision.
Guest speaker Chip Dobbs, supply management specialist at Marshall, talked about his personal experiences with being deaf. Dobbs has worked at NASA for 29 years and said he has never let his disability hold him back, but instead uses it as a gateway to inspire and connect with others.
The event ended with closing remarks from Tora Henry, director of the Office of Diversity and Equal Opportunity at Marshall. The virtual event placed importance on planning for NASA’s future by promoting equality and addressing the barriers people with disabilities face in the workplace.
“As we celebrate National Disability Employment Awareness Month, keep in mind that NASA’s mission of exploring the unknown and pushing the boundaries of human potential requires the contributions of every mind, skill set, and perspective,” Baird said. “Our commitment to inclusivity ensures that no talent goes untapped, and no idea goes unheard because together, we’re not just reaching for the stars, we’re showing the world what’s possible when everyone has a seat at the table.”
A recording of the event is available here. Learn more about NASA’s agencywide resources for individuals with disabilities as well as the agency’s Disability Employment Program.
Whitfield is an intern supporting the Marshall Office of Communications.
Farley Davis Receives NASA’s Blue Marble AwardBy Wayne Smith
Farley Davis, manager of the Environmental Engineering and Occupational Health Office at NASA’s Marshall Space Flight Center, has received a 2024 Blue Marble Award from the agency.
NASA’s Office of Strategic Infrastructure, Environmental Management Division presented the 2024 Blue Marble Awards on Oct. 8 at the agency’s Johnson Space Center. The Blue Marble Awards Program recognizes teams and individuals demonstrating exceptional environmental leadership in support of NASA’s missions and goals. In 2024, the awards included five categories: the Director’s Award, Environmental Quality, Excellence in Energy and Water Management, Excellence in Resilience or Climate Change Adaptation, and new this year: Excellence in Site Remediation.
Farley Davis, center, manager of the Environmental Engineering and Occupational Health Office at NASA’s Marshall Space Flight Center, with his NASA Blue Marble Award. Joining him, from left, are Joel Carney, assistant administrator, Strategic Infrastructure; Denise Thaller, deputy assistant administrator, Strategic Infrastructure; Charlotte Betrand, director, Environmental Management; and June Malone, director, Office of Center Operations at Marshall. NASADavis was recognized for “exceptional leadership and outstanding commitment above and beyond individual job responsibilities, to assist Marshall and the agency in enabling environmentally sound mission success.”
“The award was unexpected, and I am very thankful to receive the Environmental Management Director’s Blue Marble Award,” said Davis, who has been at Marshall for 33 years. “Collectively, Marshall’s environmental engineering team has made this award possible with their diligent support for many years keeping the center’s environmental compliance at the forefront. I will cherish the award for the rest of my life.”
June Malone, director of the Office of Center Operations at Marshall, credited Davis for his environmental leadership and mentoring team members.
“Farley’s attitude of professionalism and personal responsibility for the development and implementation of well-grounded environmental programs has increased Marshall’s sustainability and prevented pollution,” Malone said. “His tireless leadership has resulted in compliance with federal, state, and local environmental laws and regulations, and his creative solution-oriented approaches to environmental stewardship have restored contaminated areas.”
Charlotte Bertrand, director of the Environmental Management Division at NASA Headquarters, said it was an honor to select Davis for the 2024 Blue Marble Director’s Award.
“Farley’s incredibly distinguished career with NASA reflects the award’s intention to recognize exceptional leadership by an individual in assisting the agency in enabling environmentally sound mission success,” Bertrand said.
Please see the awards program for additional information.
Smith, a Media Fusion employee and the Marshall Star editor, supports the Marshall Office of Communications.
Take 5 with Brooke RhodesBy Wayne Smith
When human exploration of Mars becomes a reality and more than just the stuff of science fiction, Brooke Rhodes will be eager to investigate what astronauts discover on the Red Planet.
From listening to her talk about her work as an engineer at NASA’s Marshall Space Flight Center, it’s easy to grasp her excitement about the future of human space exploration and NASA’s Moon to Mars architecture.
Brooke Rhodes is currently on detail as the branch chief of the Avionics and Software Ground Systems Test Branch at NASA’s Marshall Space Flight Center. Working in the Instrument Development, Integration and Test Branch for the past seven years, she’s been responsible for the integration and testing of International Space Station payloads. NASA“I can’t wait for the Mars rovers to have some human company,” said Rhodes, who recently began a detail as the chief of Marshall’s Avionics and Software Ground Systems Test Branch. “I need to know if we can grow Mark Watney (of The Martian movie fame) quantities of potatoes up there. Everything we do to prepare to return humans to the Moon and establish a presence in deep space is building toward putting boots on Mars. It’s an honor and a privilege to be even a small part of it.”
Rhodes also appreciates the responsibility she takes on in any form in NASA’s exploration missions to benefit humanity. After all, she has worked on hardware for the International Space Station and has had supporting roles for the Mars Ascent Vehicle and Artemis missions.
“We at Marshall hold an incredible amount of responsibility: responsibility for the welfare of the crew on the space station, responsibility for the welfare of the crew on the Artemis missions, and even the welfare of humanity through the responsibility we have for science on the station and elsewhere,” said Rhodes, who is from Petal, Mississippi, and has worked at Marshall for seven years. “When your missions are as critical as ours, it’s nearly impossible to not be motivated.”
Now, on to Mars.
Question: What is your position and what are your primary responsibilities?
Rhodes: I recently began the detail as the branch chief of the Avionics and Software Ground Systems Test Branch, ES53. Our branch is primarily responsible for the development of hardware-in-the-loop and software development facilities for the Artemis and MAV (Mars Ascent Vehicle) missions. My home organization is ES61, the Instrument Development, Integration and Test Branch, where I’ve been responsible for the integration and testing of International Space Station payloads for the past several years.
Rhodes with a box of sample cartridge assemblies (SCAs) headed for the International Space Station. Photo courtesy of Brooke RhodesQuestion: What has been the proudest moment of your career and why?
Rhodes: One really cool moment that sticks out was the first time I saw hardware I had been responsible for being used in space. I spent several years as the integration and test lead of the Materials Science Research Rack (MSRR) Sample Cartridge Assemblies (SCAs) and we shipped our first batch of SCAs to the space station in 2018. That shipment was the culmination of years of intense effort and teamwork, so to see them onboard and about to enable materials science was an incredible feeling. There was a moment in particular that felt a bit surreal: prior to our SCA shipment the crew discovered they were missing a couple of fasteners from the onboard furnace, so we had those shipped to us from Europe and I packed them into the SCA flight foam before they shipped to the launch site. The next time I saw those fasteners they were being held up to a camera by one of the crew members, asking if those were the ones they needed for the furnace. Putting fasteners into foam didn’t take much effort, but what it represented was much bigger: being a small part of an international effort to enable science off the Earth, for the Earth, was an incredible moment I’ll carry with me for the rest of my career.
Question: Who or what inspired you to pursue an education/career that led you to NASA and Marshall?
Rhodes: I had a couple of lightbulb moments my junior year of high school that eventually set me on my current career path. I very specifically recall sitting in my physics I class and learning how to calculate the planetary motion of Jupiter and thinking I had never learned about anything cooler. Even then, though, NASA didn’t really enter my thoughts. Growing up, working for NASA didn’t even occur to me as something people could actually do – being a “rocket scientist” was just an abstract concept people threw around to indicate something was difficult.
That changed later when the same teacher who had been teaching us planetary motion took us on a field trip to Kennedy Space Center. The tour guide showing us around the Vehicle Assembly Building was a young employee who said he had majored in aerospace engineering at the University of Tennessee. That was the second lightbulb moment: here was a young person from the Southeast, just like me, who had done something tangible in order to work for NASA. That seemed easy enough, so I decided to major in aerospace engineering at Mississippi State and one day work for NASA. That turned out to not be easy, but definitely doable.
While at Mississippi State, I was able to complete three NASA internships, one at the Jet Propulsion Laboratory and two at Marshall. Eventually, I was hired on full-time at NASA’s Johnson Space Center, but wound up making my way back to Marshall, where I’ve been ever since. There’s no place on the planet better for enthusiasts of both aerospace engineering and football.
NASA astronaut Ricky Arnold, a space station crew member for Expedition 56, holds up a fastener for the Materials Science Laboratory, which Rhodes packed for shipment to the orbiting laboratory in 2018. “Putting fasteners into foam didn’t take much effort, but what it represented was much bigger: being a small part of an international effort to enable science off the Earth, for the Earth, was an incredible moment I’ll carry with me for the rest of my career.” Photo courtesy of Brooke RhodesInterestingly, my physics I teacher’s name was Mrs. Rhodes, and I used to joke with my classmates that I wanted to be Mrs. Rhodes when I grew up. I didn’t actually mean that literally, but then I married Matthew Rhodes and did, indeed, become Mrs. Rhodes.
Question: What advice do you have for employees early in their NASA career or those in new leadership roles?
Rhodes: Scary is good. If you aren’t stepping out of your comfort zone you probably aren’t growing, and if you’re experiencing imposter syndrome, you’re probably the right person for the job.
Question: What do you enjoy doing with your time while away from work?
Rhodes: While away from work I tend to invest too much of my mental wellbeing into football. To recover from the stresses of work and my football teams being terrible, I like to explore National Parks. The U.S. has some of the most diverse scenery anywhere in the world, and I love getting outside and exploring it.
Smith, a Media Fusion employee and the Marshall Star editor, supports the Marshall Office of Communications.
Planets Beware: NASA Unburies Danger Zones of Star ClusterMost stars form in collections, called clusters or associations, that include very massive stars. These giant stars send out large amounts of high-energy radiation, which can disrupt relatively fragile disks of dust and gas that are in the process of coalescing to form new planets.
A team of astronomers used NASA’s Chandra X-ray Observatory, in combination with ultraviolet, optical, and infrared data, to show where some of the most treacherous places in a star cluster may be, where planets’ chances to form are diminished.
In this new composite image, Chandra data (purple) shows the diffuse X-ray emission and young stars in Cygnus OB2, and infrared data from NASA’s now-retired Spitzer Space Telescope (red, green, blue, and cyan) reveals young stars and the cooler dust and gas throughout the region.X-ray: NASA/CXC/SAO/J. Drake et al, IR: NASA/JPL-Caltech/Spitzer; Image Processing: NASA/CXC/SAO/N. WolkThe target of the observations was Cygnus OB2, which is the nearest large cluster of stars to our Sun – at a distance of about 4,600 light-years. The cluster contains hundreds of massive stars as well as thousands of lower-mass stars. The team used long Chandra observations pointing at different regions of Cygnus OB2, and the resulting set of images were then stitched together into one large image.
The deep Chandra observations mapped out the diffuse X-ray glow in between the stars, and they also provided an inventory of the young stars in the cluster. This inventory was combined with others using optical and infrared data to create the best census of young stars in the cluster.
In a new composite image, the Chandra data (purple) shows the diffuse X-ray emission and young stars in Cygnus OB2, and infrared data from NASA’s now-retired Spitzer Space Telescope (red, green, blue, and cyan) reveals young stars and the cooler dust and gas throughout the region.
In these crowded stellar environments, copious amounts of high-energy radiation produced by stars and planets are present. Together, X-rays and intense ultraviolet light can have a devastating impact on planetary disks and systems in the process of forming.
Planet-forming disks around stars naturally fade away over time. Some of the disk falls onto the star and some is heated up by X-ray and ultraviolet radiation from the star and evaporates in a wind. The latter process, known as “photoevaporation,” usually takes between five and 10 million years with average-sized stars before the disk disappears. If massive stars, which produce the most X-ray and ultraviolet radiation, are nearby, this process can be accelerated.
The researchers using this data found clear evidence that planet-forming disks around stars indeed disappear much faster when they are close to massive stars producing a lot of high-energy radiation. The disks also disappear more quickly in regions where the stars are more closely packed together.
For regions of Cygnus OB2 with less high-energy radiation and lower numbers of stars, the fraction of young stars with disks is about 40%. For regions with more high-energy radiation and higher numbers of stars, the fraction is about 18%. The strongest effect – meaning the worst place to be for a would-be planetary system – is within about 1.6 light-years of the most massive stars in the cluster.
A separate study by the same team examined the properties of the diffuse X-ray emission in the cluster. They found that the higher-energy diffuse emission comes from areas where winds of gas blowing away from massive stars have collided with each other. This causes the gas to become hotter and produce X-rays. The less energetic emission probably comes from gas in the cluster colliding with gas surrounding the cluster.
Two separate papers describing the Chandra data of Cygnus OB2 are available. The paper about the planetary danger zones, led by Mario Giuseppe Guarcello (National Institute for Astrophysics in Palermo, Italy), appeared in the November 2023 issue of the Astrophysical Journal Supplement Series, and is available here. The paper about the diffuse emission, led by Juan Facundo Albacete-Colombo (University of Rio Negro in Argentina) was published in the same issue of Astrophysical Journal Supplement, and is available here.
NASA’s Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.
NASA’s Jet Propulsion Laboratory (JPL) managed the Spitzer Space Telescope mission for the agency’s Science Mission Directorate until the mission was retired in January 2020. Science operations were conducted at the Spitzer Science Center at Caltech. Spacecraft operations were based at Lockheed Martin Space in Littleton, Colorado. Data are archived at the Infrared Science Archive operated by IPAC at Caltech. Caltech manages JPL for NASA.
NASA Begins New Deployable Solar Array Tech Demo on Pathfinder SpacecraftNASA recently evaluated initial flight data and imagery from Pathfinder Technology Demonstrator-4 (PTD-4), confirming proper checkout of the spacecraft’s systems including its on-board electronics as well as the payload’s support systems such as the small onboard camera. Shown is a test image of Earth taken by the payload camera, shortly after PTD-4 reached orbit. This camera will continue photographing the technology demonstration during the mission.
A test image of Earth taken by NASA’s Pathfinder Technology Demonstrator-4’s onboard camera. The camera will capture images of the Lightweight Integrated Solar Array and anTenna upon deployment.NASAPayload operations are now underway for the primary objective of the PTD-4 mission – the demonstration of a new power and communications technology for future spacecraft. The payload, a deployable solar array with an integrated antenna called the Lightweight Integrated Solar Array and anTenna, or LISA-T, has initiated deployment of its central boom structure. The boom supports four solar power and communication arrays, also called petals. Releasing the central boom pushes the still-stowed petals nearly three feet away from the spacecraft bus. The mission team currently is working through an initial challenge to get LISA-T’s central boom to fully extend before unfolding the petals and beginning its power generation and communication operations.
Small spacecraft on deep space missions require more electrical power than what is currently offered by existing technology. The four-petal solar array of LISA-T is a thin-film solar array that offers lower mass, lower stowed volume, and three times more power per mass and volume allocation than current solar arrays. The in-orbit technology demonstration includes deployment, operation, and environmental survivability of the thin-film solar array.
“The LISA-T experiment is an opportunity for NASA and the small spacecraft community to advance the packaging, deployment, and operation of thin-film, fully flexible solar and antenna arrays in space. The thin-film arrays will vastly improve power generation and communication capabilities throughout many different mission applications,” said John Carr, deputy center chief technologist at NASA’s Marshall Space Flight Center. “These capabilities are critical for achieving higher value science alongside the exploration of deep space with small spacecraft.”
NASA teams are testing a key technology demonstration known as LISA-T, short for the Lightweight Integrated Solar Array and anTenna. It’s a super compact, stowable, thin-film solar array that when fully deployed in space, offers both a power generation and communication capability for small spacecraft. LISA-T’s orbital flight test is part of the Pathfinder Technology Demonstrator series of missions. (NASA)The Pathfinder Technology Demonstration series of missions leverages a commercial platform which serves to test innovative technologies to increase the capability of small spacecraft. Deploying LISA-T’s thin solar array in the harsh environment of space presents inherent challenges such as deploying large highly flexible non-metallic structures with high area to mass ratios. Performing experiments such as LISA-T on a smaller, lower-cost spacecraft allows NASA the opportunity to take manageable risk with high probability of great return. The LISA-T experiment aims to enable future deep space missions with the ability to acquire and communicate data through improved power generation and communication capabilities on the same integrated array.
The PTD-4 small spacecraft is hosting the in-orbit technology demonstration called LISA-T. The PTD-4 spacecraft deployed into low Earth orbit from SpaceX’s Transporter-11 rocket, which launched from Space Launch Complex 4E at Vandenberg Space Force Base in California on Aug. 16. Marshall designed and built the LISA-T technology as well as LISA-T’s supporting avionics system. NASA’s Small Spacecraft Technology program, based at NASA’s Ames Research Center and led by the agency’s Space Technology Mission Directorate, funds and manages the PTD-4 mission as well as the overall Pathfinder Technology Demonstration mission series. Terran Orbital Corporation of Irvine, California, developed and built the PTD-4 spacecraft bus, named Triumph.
NASA SPoRT’s Streamflow-AI Helps with Flood Preparedness in TexasBy Paola Pinto
For more than two decades, the NASA Short-term Prediction Research and Transition Center (SPoRT) within the NASA Earth Science Office at Marshall Space Flight Center has been at the forefront of developing and maintaining decision-making tools for meteorological predictions.
This image represents the first instance of predictions getting into moderate flooding in Pine Island Bayou. At 14 feet (start of the moderate flooding category), Cooks Lake Road becomes unsafe for most vehicles. NASAJonathan Brazzell, a service hydrologist at the National Weather Service (NWS) office in Lake Charles, Louisiana, highlighted a recent example of SPoRT’s impact while he was doing forecasting for Texas streams.
Brazzell, who manages the South Texas and South Louisiana regions, emphasized the practical applications and significant impacts of the Machine Learning model developed by NASA SPoRT to predict future stream heights, known as the SPoRT Streamflow A.I. During a heavy rainfall event this past spring, he noted the challenge of forecasting flooding beyond 48 hours. SPoRT has worked closely with the NWS offices to develop a machine learning tool capable of predicting river flooding beyond two days and powered by the SPoRT Land Information System.
“Previously, we relied on actual gauge information and risk assessments based on predicted precipitation,” Brazzell said. “Now, with this machine learning, we have a modeling tool that provides a much-needed predictive capability.”
During forecasted periods of heavy precipitation from early to mid-May, Brazzell monitored potential flooding events and their magnitude using NASA SPoRT’s Streamflow-AI, which provided essential support to the Pine Island Bayou and Big Cow Creek communities in south Texas.
Streamflow A.I. enabled local authorities to provide advance notice, allowing residents to prepare adequately for the event. Due to the benefit of three to seven-day flood stage predictions, the accurate forecasts helped county officials decide on road closures and evacuation advisories; community officials advised residents to gather a seven-day supply of necessities and relocate their vehicles, minimizing disruption and potential damage.
Brazzell highlighted specific instances where the machine learning outputs were critical. For example, during the event that peaked around May 6, Streamflow A.I. accurately predicted the rise in stream height, allowing for timely road closures and advisories. These predictions were shared with county officials and were pivotal in their decision-making process.
This image shows the water levels after rainfall and predicts a moderate stream height in Pine Island Bayou. NASABrazzell shared that integrating SPoRT’s machine learning capabilities with their existing tools, such as flood risk mapping, proved invaluable. Although the machine learning outputs had been operational for almost two years after Hurricane Harvey, this season has provided their first significant applications in real-time scenarios due to persistent conditions of below-normal precipitation and ongoing drought.
He also mentioned the broader applications of Streamflow A.I., including its potential use in other sites beyond those currently being monitored. He expressed interest in expanding the use of machine learning stream height outputs to additional locations, citing the successful application in current sites as a compelling reason for broader implementation.
NASA SPoRT users’ experiences emphasize how crucial advanced prediction technologies are in hydrometeorology and emergency management operations. Based on Brazzell’s example, it is reasonable to say that the product’s ability to provide accurate, timely data greatly improves decision-making processes and ensures public safety. The partnership between NASA SPoRT and operational agencies like NOAA/NWS and county response teams demonstrates how research and operations can be seamlessly integrated into everyday practices, making a tangible difference in communities vulnerable to high-impact events.
As the Streamflow A.I. product continues to evolve and expand its applications, it holds significant promise for improving disaster preparedness and response efforts across various regions that experience different types of flooding events.
The Streamflow-AI product provides a 7-day river height or stage forecasts at select gauges across the south/eastern U.S. You can find the SPoRT training item on Streamflow-AI here.
Pinto is a research associate at the University of Alabama in Huntsville, specializing in communications and user engagement for NASA SPoRT.
Agency Awards Custodial, Refuse Collection ContractNASA has selected All Native Synergies Company of Winnebego, Nebraska, to provide custodial and refuse collection services at the agency’s Marshall Space Flight Center.
The Custodial and Refuse Collection Services III contract is a firm-fixed-price contract with an indefinite-delivery/indefinite-quantity provision. Its maximum potential value is approximately $33.5 million. The performance period began Oct. 23 and will extend four and a half years, with a one-year base period, four one-year options, and a six-month extension.
This critical service contract provides custodial and refuse collection services for all Marshall facilities. Work under the contract includes floor maintenance, including elevators; trash removal; cleaning drinking fountains and restrooms; sweeping, mopping, and cleaning building entrances and stairways.
Buckle Up: NASA-Funded Study Explores Turbulence in Molecular Clouds
3 min read
Buckle Up: NASA-Funded Study Explores Turbulence in Molecular Clouds This image shows the distribution of density in a simulation of a turbulent molecular cloud. NASA/E. Scannapieco et al (2024)On an airplane, motions of the air on both small and large scales contribute to turbulence, which may result in a bumpy flight. Turbulence on a much larger scale is important to how stars form in giant molecular clouds that permeate the Milky Way.
In a new NASA-funded study in the journal Science Advances, scientists created simulations to explore how turbulence interacts with the density of the cloud. Lumps, or pockets of density, are the places where new stars will be born. Our Sun, for example, formed 4.6 billion years ago in a lumpy portion of a cloud that collapsed.
“We know that the main process that determines when and how quickly stars are made is turbulence, because it gives rise to the structures that create stars,” said Evan Scannapieco, professor of astrophysics at Arizona State University and lead author of the study. “Our study uncovers how those structures are formed.”
Giant molecular clouds are full of random, turbulent motions, which are caused by gravity, stirring by the galactic arms and winds, jets, and explosions from young stars. This turbulence is so strong that it creates shocks that drive the density changes in the cloud.
The simulations used dots called tracer particles to traverse a molecular cloud and travel along with the material. As the particles travel, they record the density of the part of the cloud they encounter, building up a history of how pockets of density change over time. The researchers, who also included Liubin Pan from Sun Yat Sen University in China, Marcus Brüggen from the University of Hamburg in Germany, and Ed Buie II from Vassar College in Poughkeepsie, New York, simulated eight scenarios, each with a different set of realistic cloud properties.
This animation shows the distribution of density in a simulation of a turbulent molecular cloud. The colors represent density, with dark blue indicating the least dense regions and red indicating the densest regions. Credit: NASA/E. Scannapieco et al (2024)The team found that the speeding up and slowing down of shocks plays an essential role in the path of the particles. Shocks slow down as they go into high-density gas and speed up as they go into low-density gas. This is akin to how an ocean wave strengthens when it hits shallow water by the shore.
When a particle hits a shock, the area around it becomes more dense. But because shocks slow down in dense regions, once lumps become dense enough, the turbulent motions can’t make them any denser. These lumpiest high-density regions are where stars are most likely to form.
While other studies have explored molecular cloud density structures, this simulation allows scientists to see how those structures form over time. This informs scientists’ understanding of how and where stars are likely to be born.
“Now we can understand better why those structures look the way they do because we’re able to track their histories,” said Scannapieco.
This image shows part of a simulation of a molecular cloud. The colors represent density, with dark blue indicating the least dense regions and red indicating the densest regions. Tracer particles, represented by black dots, traverse the simulated cloud. By examining how they interact with shocks and pockets of density, scientists can better understand the structures in molecular clouds that lead to star formation. NASA/E. Scannapieco et al (2024)NASA’s James Webb Space Telescope is exploring the structure of molecular clouds. It is also exploring the chemistry of molecular clouds, which depends on the history of the gas modeled in the simulations. New measurements like these will inform our understanding of star formation.
A Small Business Success Story: Mentor-Protégé Agreements Drive Growth in Aerospace Sector
In the ever-evolving aerospace industry, collaboration and mentorship are vital for fostering innovation and growth. Recent achievements highlight the positive impact of Mentor-Protégé Agreements (MPA) facilitated by Jacobs Engineering Group, now known as Amentum Space Exploration Group. Two standout partnerships have demonstrated remarkable success and expansion, underscoring the value of such initiatives.
CODEplus and Amentum Space Exploration GroupThe 24-Month MPA between CODEplus and Amentum Space Exploration Group has proven to be a game-changer. Recognized as the FY24 Marshall Space Flight Center (MSFC) Mentor-Protégé Agreement of the Year, this collaboration has significantly boosted CODEplus’s operations. Since the agreement’s inception on March 1, 2023, CODEplus has expanded its workforce to ten full-time employees and currently has two active job requisitions. This growth exemplifies the transformative potential of mentorship in nurturing small businesses within the aerospace sector.
KS Ware and Amentum Space Exploration Group / CH2M HillAnother exemplary partnership involves KS Ware, which has benefitted from a 36-Month MPA with Amentum Space Exploration Group and CH2M Hill. This agreement has garnered accolades as both the FY23 NASA Agency Mentor-Protégé Agreement of the Year and the FY23 MSFC Mentor-Protégé Agreement of the Year. Through targeted business and technical counseling, KS Ware successfully launched a new drilling division in 2022 and expanded its offerings to include surveying services in 2023. The impact of this mentorship is evident, with a remarkable 30% growth rate reported for KS Ware.
These success stories highlight the critical role of Mentor-Protégé Agreements in empowering small businesses in the aerospace industry. By fostering collaboration and providing essential support, Amentum Space Exploration Group has not only strengthened its partnerships but also contributed to the broader growth and innovation landscape. As the aerospace sector continues to evolve, such initiatives will be essential in driving future success.
Published by: Tracy L. Hudspeth
60 Years Ago: Lunar Landing Research Vehicle Takes Flight
60 Years Ago: Lunar Landing Research Vehicle Takes Flight
NASA pilot Joe Walker sits in the pilot’s platform of the Lunar Landing Research Vehicle (LLRV) number 1 on Oct. 30, 1964. The LLRV and its successor the Lunar Landing Training Vehicle (LLTV) provided the training tool to simulate the final 200 feet of the descent to the Moon’s surface.
The LLRVs, humorously referred to as flying bedsteads, were used by NASA’s Flight Research Center, now NASA’s Armstrong Flight Research Center in California, to study and analyze piloting techniques needed to fly and land the Apollo lunar module in the moon’s airless environment.
Learn more about the LLRV’s first flight.
Image credit: NASA
NASA’s Perseverance Captures ‘Googly Eye’ During Solar Eclipse
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA’s Perseverance rover captured the silhouette of the Martian moon Phobos as it passed in front of the Sun on Sept. 30, 2024. The video shows the transit speeded up by four times, followed by the eclipse in real time. NASA/JPL-Caltech/ASU/MSSSThe tiny, potato-shaped moon Phobos, one of two Martian moons, cast a silhouette as it passed in front of the Sun, creating an eye in Mars’ sky.
From its perch on the western wall of Mars’ Jezero Crater, NASA’s Perseverance rover recently spied a “googly eye” peering down from space. The pupil in this celestial gaze is the Martian moon Phobos, and the iris is our Sun.
Captured by the rover’s Mastcam-Z on Sept. 30, the 1,285th Martian day of Perseverance’s mission, the event took place when the potato-shaped moon passed directly between the Sun and a point on the surface of Mars, obscuring a large part of the Sun’s disc. At the same time that Phobos appeared as a large black disc rapidly moving across the face of the Sun, its shadow, or antumbra, moved across the planet’s surface.
Astronomer Asaph Hall named the potato-shaped moon in 1877, after the god of fear and panic in Greek mythology; the word “phobia” comes from Phobos. (And the word for fear of potatoes, and perhaps potato-shaped moons, is potnonomicaphobia.) He named Mars’ other moon Deimos, after Phobos’ mythological twin brother.
Roughly 157 times smaller in diameter than Earth’s Moon, Phobos is only about 17 miles (27 kilometers) at its widest point. Deimos is even smaller.
Rapid TransitBecause Phobos’ orbit is almost perfectly in line with the Martian equator and relatively close to the planet’s surface, transits of the moon occur on most days of the Martian year. Due to its quick orbit (about 7.6 hours to do a full loop around Mars), a transit of Phobos usually lasts only 30 seconds or so.
This is not the first time that a NASA rover has witnessed Phobos blocking the Sun’s rays. Perseverance has captured several Phobos transits since landing at Mars’ Jezero Crater in February 2021. Curiosity captured a video in 2019. And Opportunity captured an image in 2004.
By comparing the various images, scientists can refine their understanding of the moon’s orbit to learn how it’s changing. Phobos is getting closer to Mars and is predicted to collide with it in about 50 million years.
More About PerseveranceArizona State University leads the operations of the Mastcam-Z instrument, working in collaboration with Malin Space Science Systems in San Diego, on the design, fabrication, testing, and operation of the cameras, and in collaboration with the Niels Bohr Institute of the University of Copenhagen on the design, fabrication, and testing of the calibration targets.
A key objective for Perseverance’s mission on Mars is astrobiology, including the search for signs of ancient microbial life. The rover will characterize the planet’s geology and past climate, pave the way for human exploration of the Red Planet, and be the first mission to collect and cache Martian rock and regolith (broken rock and dust).
Subsequent NASA missions, in cooperation with ESA (European Space Agency), would send spacecraft to Mars to collect these sealed samples from the surface and return them to Earth for in-depth analysis.
The Mars 2020 Perseverance mission is part of NASA’s Moon to Mars exploration approach, which includes Artemis missions to the Moon that will help prepare for human exploration of the Red Planet.
NASA’s Jet Propulsion Laboratory, which is managed for the agency by Caltech in Pasadena, California, built and manages operations of the Perseverance rover.
For more about Perseverance:
https://mars.nasa.gov/mars2020
News Media ContactsKaren Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov
2024-150
Share Details Last Updated Oct 30, 2024 Related Terms Explore More 2 min read NASA Brings Drone and Space Rover to Air Show Article 11 hours ago 3 min read La NASA lleva un dron y un rover espacial a un espectáculo aéreo Article 11 hours ago 4 min read NASA Technologies Named Among TIME Inventions of 2024 Article 12 hours ago Keep Exploring Discover Related TopicsMissions
Humans in Space
Climate Change
Solar System
NASA to Launch Innovative Solar Coronagraph to Space Station
5 min read
NASA to Launch Innovative Solar Coronagraph to Space StationNASA’s Coronal Diagnostic Experiment (CODEX) is ready to launch to the International Space Station to reveal new details about the solar wind including its origin and its evolution.
Launching in November 2024 aboard SpaceX’s 31st commercial resupply services mission, CODEX will be robotically installed on the exterior of the space station. As a solar coronagraph, CODEX will block out the bright light from the Sun’s surface to better see details in the Sun’s outer atmosphere, or corona.
In this animation, the CODEX instrument can be seen mounted on the exterior of the International Space Station. For more CODEX imagery, visit https://svs.gsfc.nasa.gov/14647. CODEX Team/NASA“The CODEX instrument is a new generation solar coronagraph,” said Jeffrey Newmark, principal investigator for the instrument and scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “It has a dual use — it’s both a technology demonstration and will conduct science.”
This coronagraph is different from prior coronagraphs that NASA has used because it has special filters that can provide details of the temperature and speed of the solar wind. Typically, a solar coronagraph captures images of the density of the plasma flowing away from the Sun. By combining the temperature and speed of the solar wind with the traditional density measurement, CODEX can give scientists a fuller picture of the wind itself.
“This isn’t just a snapshot,” said Nicholeen Viall, co-investigator of CODEX and heliophysicist at NASA Goddard. “You’re going to get to see the evolution of structures in the solar wind, from when they form from the Sun’s corona until they flow outwards and become the solar wind.”
The CODEX instrument will give scientists more information to understand what heats the solar wind to around 1.8 million degrees Fahrenheit — around 175 times hotter than the Sun’s surface — and sends it streaming out from the Sun at almost a million miles per hour.
Team members for CODEX pose with the instrument in a clean facility during initial integration of the coronagraph with the pointing system. CODEX Team/NASAThis launch is just the latest step in a long history for the instrument. In the early 2000s and in August 2017, NASA scientists ran ground-based experiments similar to CODEX during total solar eclipses. A coronagraph mimics what happens during a total solar eclipse, so this naturally occurring phenomena provided a good opportunity to test instruments that measure the temperature and speed of the solar wind.
In 2019, NASA scientists launched the Balloon-borne Investigation of Temperature and Speed of Electrons in the corona (BITSE) experiment. A balloon the size of a football field carried the CODEX prototype 22 miles above Earth’s surface, where the atmosphere is much thinner and the sky is dimmer than it is from the ground, enabling better observations. However, this region of Earth’s atmosphere is still brighter than outer space itself.
“We saw enough from BITSE to see that the technique worked, but not enough to achieve the long-term science objectives,” said Newmark.
Now, by installing CODEX on the space station, scientists will be able to view the Sun’s corona without fighting the brightness of Earth’s atmosphere. This is also a beneficial time for the instrument to launch because the Sun has reached its solar maximum phase, a period of high activity during its 11-year cycle.
“The types of solar wind that we get during solar maximum are different than some of the types of wind we get during solar minimum,” said Viall. “There are different coronal structures during this time that lead to different types of solar wind.”
The CODEX coronagraph is shown during optical alignment and assembly. CODEX Team/NASAThis coronagraph will be looking at two types of solar wind. In one, the solar wind travels directly outward from our star, pulling the magnetic field from the Sun into the heliosphere, the bubble that surrounds our solar system. The other type of solar wind forms from magnetic field lines that are initially closed, like a loop, but then open up.
These closed field lines contain hot, dense plasma. When the loops open, this hot plasma gets propelled into the solar wind. While these “blobs” of plasma are present throughout all of the solar cycle, scientists expect their location to change because of the magnetic complexity of the corona during solar maximum. The CODEX instrument is designed to see how hot these blobs are for the first time.
The coronagraph will also build upon research from ongoing space missions, such as the joint ESA (European Space Agency) and NASA mission Solar Orbiter, which also carries a coronagraph, and NASA’s Parker Solar Probe. For example, CODEX will look at the solar wind much closer to the solar surface, while Parker Solar Probe samples it a little farther out. Launching in 2025, NASA’s Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission will make 3D observations of the Sun’s corona to learn how the mass and energy there become solar wind.
By comparing these findings, scientists can better understand how the solar wind is formed and how the solar wind changes as it travels farther from the Sun. This research advances our understanding of space weather, the conditions in space that may interact with Earth and spacecraft.
“Just like understanding hurricanes, you want to understand the atmosphere the storm is flowing through,” said Newmark. “CODEX’s observations will contribute to our understanding of the region that space weather travels through, helping improve predictions.”
The CODEX instrument is a collaboration between NASA’s Goddard Space Flight Center and the Korea Astronomy and Space Science Institute with additional contribution from Italy’s National Institute for Astrophysics.
By Abbey Interrante
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Article
2 hours ago
4 min read New NASA Instrument for Studying Snowpack Completes Airborne Testing
Article
1 day ago
2 min read New Project Invites You To Do Martian Cloud Science with NASA
Article
1 day ago
Keep Exploring Discover More Topics From NASA
Missions
Humans in Space
Climate Change
Solar System
NASA Brings Drone and Space Rover to Air Show
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) About 20,000 guests visited NASA’s tent at the Miramar Air Show in San Diego, California, Sept. 27-29, 2024. NASALee esta historia en Español aquí.
In September, the three NASA centers in California came together to share aerospace innovations with thousands of guests at the Miramar Air Show in San Diego, California. Agency experts talked about the exciting work NASA does while exploring the secrets of the universe for the benefit of all.
Under a large tent near the airfield, guests perused exhibits from different centers and projects, like a model of the Innovator rover or the Alta-X drone, from Sept. 27 through 29. Agency employees from NASA’s Armstrong Flight Research Center in Edwards, California; Ames Research Center in Moffett Field, California; and Jet Propulsion Laboratory (JPL) in Southern California guided guests through tours and presentations and shared messages about NASA missions.
“The airshow is about the people just as much as it is about the aircraft and technology,” said Derek Abramson, chief engineer for the Subscale Flight Research Laboratory at NASA Armstrong. “I met many new people, worked with an amazing team, and developed a comradery with other NASA centers, talking about what we do here as a cohesive organization.”
Experts like flight controls engineer Felipe Valdez shared the NASA mission with air show guests, and explained the novelty of airborne instruments like the Alta-X drone at the Miramar Air Show in San Diego, California, Sept. 27-29, 2024.NASAOn Sept. 29, pilots from Armstrong joined the event to take photos with guests and answer questions from curious or enthusiastic patrons. One air show guest had a special moment with NASA pilot Jim Less.
“One of my favorite moments was connecting with a young man in his late teens who stopped by the exhibit tent numerous times, all in hopes of being able to meet Jim Less, our X-59 pilot,” said Kevin Rohrer, chief of Communications at NASA Armstrong. “It culminated with a great conversation with the two and Jim [Less] autographing a model of the X-59 aircraft the young man had been carrying around.”
“I look forward to this tradition continuing, if not at this venue, at some other event in California,” Rohrer continued. “We have a lot of minds hungry and passionate to learn more about all of NASA missions.”
The Miramar Air Show is an annual event that happens at the Miramar Air Base in San Diego, California.
Professionals like Leticha Hawkinson, center right, and Haig Arakelian, center left, shared learning and career opportunities for NASA enthusiasts visiting the Miramar Air Show in San Diego, California, Sept. 27-29, 2024.NASA Share Details Last Updated Oct 30, 2024 EditorDede DiniusContactErica HeimLocationArmstrong Flight Research Center Related Terms Explore More 4 min read NASA’s Perseverance Captures ‘Googly Eye’ During Solar Eclipse Article 10 hours ago 3 min read La NASA lleva un dron y un rover espacial a un espectáculo aéreo Article 11 hours ago 4 min read NASA Technologies Named Among TIME Inventions of 2024 Article 12 hours ago Keep Exploring Discover More Topics From NASAArmstrong Flight Research Center
Aircraft Flown at Armstrong
Armstrong People
Armstrong Capabilities & Facilities
La NASA lleva un dron y un rover espacial a un espectáculo aéreo
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) Aproximadamente 20,000 visitantes pasaron por la carpa de la NASA en el Espectáculo Aéreo de Miramar, celebrado en San Diego, California, entre el 27 y el 29 de septiembre de 2024.NASARead this story in English here.
En septiembre, los tres centros de la NASA en California se reunieron para compartir innovaciones aeroespaciales con miles de asistentes en el Espectáculo Aéreo de Miramar, en San Diego, California. Expertos de la agencia hablaron del apasionante trabajo que realiza la NASA mientras explora los secretos del universo en beneficio de todos.
Bajo una gran carpa cerca del aeródromo, los invitados exploraron exposiciones de diferentes centros y proyectos, como una maqueta del rover Innovator o el avión no tripulado Alta-X, desde el 27 al 29 de septiembre. Empleados de la agencia provenientes del Centro de Investigación de Vuelo Armstrong de la NASA en Edwards, California, del Centro de Investigación Ames en Moffett Field, California y del Laboratorio de Propulsión a Chorro (JPL por sus siglas en inglés) en el sur de California guiaron a los visitantes a través de visitas y presentaciones y compartieron mensajes sobre las misiones de la NASA.
“El espectáculo aéreo es tanto sobre la gente como sobre las aeronaves y la tecnología”, dijo Derek Abramson, ingeniero jefe del Laboratorio de Investigación de Vuelo a Subescala de NASA Armstrong. “Conocí a mucha gente nueva, trabajé con un equipo increíble y formé un gran vínculo con otros centros de la NASA, hablando de lo que hacemos aquí como una organización cohesiva”.
Expertos como el ingeniero de controles de vuelo Felipe Valdez compartieron la misión de la NASA con los visitantes del espectáculo aéreo y explicaron la novedad de los instrumentos aéreos como el dron Alta-X en el Espectáculo Aéreo de Miramar en San Diego, California, del 27 al 29 de septiembre de 2024.NASAEl 29 de septiembre, los pilotos de Armstrong se unieron al evento para tomarse fotos con los invitados y responder a las preguntas de los curiosos o entusiastas asistentes. Un visitante del espectáculo aéreo tuvo un momento especial con el piloto de la NASA Jim Less.
“Uno de mis momentos favoritos fue conectar con un joven en sus útimos años de adolescencia que se detuvo numerosas veces en la carpa de exhibición, con la esperanza de poder conocer a Jim Less, nuestro piloto del X-59”, dijo Kevin Rohrer, jefe de comunicaciones de NASA Armstrong. “Culminó con una gran conversación entre los dos y con Jim [Less] autografiando un modelo del avión X-59 que el joven traía consigo”.
“Espero que esta tradición continúe, si no en este mismo lugar, en algún otro evento en California”, continuó Rohrer. “Tenemos muchas mentes hambrientas y apasionadas por aprender más sobre todas las misiones de la NASA”.
El Espectáculo Aéreo de Miramar es un evento anual que tiene lugar en la Base Aérea de Miramar, en San Diego, California.
Profesionales como Leticha Hawkinson, en el centro a la derecha, y Haig Arakelian, en el centro a la izquierda, compartieron oportunidades de aprendizaje y carrera para los entusiastas de la NASA que visitaron el Espectáculo Aéreo de Miramar en San Diego, California, del 27 al 29 de septiembre de 2024.NASAArticulo traducido por: Elena Aguirre
Share Details Last Updated Oct 30, 2024 EditorDede DiniusContactElena Aguirreelena.aguirre@nasa.govLocationArmstrong Flight Research Center Related Terms Explore More 4 min read NASA’s Perseverance Captures ‘Googly Eye’ During Solar Eclipse Article 10 hours ago 2 min read NASA Brings Drone and Space Rover to Air Show Article 11 hours ago 4 min read NASA Technologies Named Among TIME Inventions of 2024 Article 12 hours ago Keep Exploring Discover More Topics From NASAArmstrong Flight Research Center
Aircraft Flown at Armstrong
Armstrong People
Armstrong Capabilities & Facilities
Ken Iliff: Engineering 40 Years of Success
10 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)Editor’s note: This article was published May 23, 2003, in NASA Armstrong’s X-Press newsletter. NASA’s Dryden Flight Research Center in Edwards, California, was redesignated Armstrong Flight Research Center on March 1, 2014. Ken Iliff was inducted into the National Hall of Fame for Persons with Disabilities in 1987. He died Jan. 4, 2016.
Alphonso Stewart, from left, Ken Iliff, and Dale Reed study lifting body aircraft models at NASA’s Armstrong (then Dryden) Flight Research Center in Edwards, California.NASAAs an Iowa State University engineering student in the early 1960s, Ken Iliff was hard at work on a glider flight simulation.
Upon examining the final results – which, in those early days of the computer revolution, were viewed on a long paper printout – he noticed one glaring imperfection: the way he had programmed it, his doomed glider would determinedly accelerate as it headed for the ground.
The culprit was a single keystroke. At the time, programming was based on data that had been painstakingly entered into the computer by hand, on punch cards and piece by piece. Somewhere, Iliff had entered a plus sign instead of a minus sign.
The seemingly minor incident was to foreshadow great things to come in Iliff’s career.
Not long after graduation, the West Union, Iowa, native found himself at what was then called simply the NASA Flight Research Center located on Edwards Air Force Base.
“I just knew I didn’t want to be sitting somewhere in a big room full of engineers who were all doing the same thing,” Iliff said of choosing Dryden over other jobs and other NASA centers. “It was a small center doing important things, and it was in California. I knew I wanted to be there.”
Once at Dryden, the issue of data tidbits was central to the new hire’s workday. Iliff’s post called for him and many of his colleagues to spend much of their time “reading up” data – a laborious process of measuring data from film using a single reference line and a ruler. Measurements were made every tenth of a second; for a ten-second maneuver, a total of one hundred “traces” were taken for every quantity being recorded.
“I watched talented people spending entire days analyzing data,” he recalled. “And then, maybe two people would arrive at two entirely different conclusions” from the same data sets.
As has happened so often at the birth of revolutionary ideas, then, one day Iliff had a single, simple thought about the time-intensive and maddeningly inexact data analysis process:
“There just has to be a better way to do this.”
The remedy he devised was to result in a sea change at Dryden, and would reverberate throughout the world of computer-based scientific research.
Iliff’s work spanned the decades that encompassed some of Dryden’s greatest achievements, from the X-15 through the XB-70 and the tentative beginnings of the shuttle program. The solution he created to the problem of inaccuracy in data analysis focused on aerodynamic performance – how to formulate questions about an aircraft’s performance once answers about it are already known, how to determine the “why?” when the “what happens?” has already happened.
The work is known as “parameter estimation,” and is used in aerospace applications to extract precise definitions of aerodynamic, structural and performance parameters from flight data.
His methodology – cemented in computer coding Iliff developed using Fortran’s lumbering binary forerunner, machine code – allowed researchers to determine precisely the type of information previously derived only as best-estimate guesses through analysis of data collected in wind tunnels and other flight-condition simulators. In addition to aerospace science, parameter estimation is also used today in a wide array of research applications, including those involving submarines, economic models, and biomedicine.
With characteristic deference, Iliff now brushes off any suggestion of his discovery’s significance. Instead, he credits other factors for his successes, such as a Midwestern work ethic and Iowa State University’s early commitment to giving its engineering students good access to the new and emerging computer technology.
To hear him tell it, “all good engineers are a little bit lazy. We know how to innovate – how to find an easier way.
“I’d been trained well, and given the right tools – I was just in the right place at the right time.”
But however modestly he might choose to see it characterized, it’s fair to number Iliff’s among the longest and most distinguished careers to take root in the ranks of Dryden research engineers. Though his groundbreaking work will live forever in research science, when Iliff retired in December he brought to a close his official role in some of the most important chapters in Dryden history.
Ken Iliff worked for four decades on revolutionary aircraft and spacecraft, including the X-29 forward swept wing aircraft behind him, at NASA’s Armstrong (then Dryden) Flight Research Center in Edwards, California.NASAHis pioneering work with parameter estimation carried through years of aerodynamic assessment and data analysis involving lifting-body and wing-body aircraft, from the X-15 through the M2-F1, M2-F2 and M2-F3 projects, the HL-10, the X-24B and NASA’s entire fleet of space shuttles. His contributions aided in flight research on the forward-swept-wing X-29 and the F/A-18 High Angle of Attack program, on F-15 spin research vehicles, on thrust vectoring and supermaneuverability.
Iliff began work on the space shuttle program when it was little more than a speculative “what’s next?” chapter in manned spaceflight, long before it reached officially sanctioned program status. Together with a group spearheaded by the late NASA research pilot and long-time Dryden Chief Engineer Milt Thompson – who Iliff describes unflinchingly as “my hero” – Iliff helped explore the vast range of possibilities for a new orbiting craft that would push NASA to its next frontier after landing on the moon.
In an environment much more informal than today’s, when there were few designations of “program manager” or “task monitor” or “deputy director” among NASA engineers like Iliff and Thompson, a handful of creative, disciplined minds were at work dreaming up a reusable aircraft that would launch, orbit the Earth and return. Iliff’s role was to offer up the rigor of comparison in size, speed and performance among potential aircraft designs; Thompson and Iliff’s group was responsible, for example, for the decision to abandon the notion of jet engines on the orbiter, decreeing them too heavy, too risky and too inefficient.
Month in and month out, Iliff and his colleagues painstakingly researched and developed the myriad design details that eventually materialized into the shuttle fleet. There was, in Iliff’s words, “a love affair between the shuttle and the engineers.”
And in a display typifying the charged environment of creative collaboration that governed the effort – an effort many observe wryly that it would be difficult to replicate at NASA, today or anytime – the body of research was compiled into the now-legendary aero-data book, a living document that records in minute detail every scrap of design and performance data recorded about the shuttles’ flight activity.
Usually with more than a touch of irony, the compiling of the aero-data book has been described with phrases like “a remarkably democratic process,” involving as it did the need for a hundred independent minds and strong personalities to agree on indisputable facts about heat, air flow, turbulence, drag, stability and a dozen other aerodynamic principles. But Iliff says the success of the mammoth project, last updated in 1996, was ultimately enabled by a shared commitment to a culture that was unique to Dryden, one that made the Center great.
“Well, big, complicated things don’t always come out like you think they will,” Iliff said.
“But we understood completely the idea of ‘informed risk.’ We had a thorough understanding of risks before taking them – nobody ever did anything on the shuttle that they thought was dangerous, or likely to fail.
“The truly great thing (about that era at Dryden) was that they mentored us, and let us take those risks, and helped us get good right away. That was how we were able to do what we did.”
It was an era that Iliff says he was thrilled to be a part of, and which he admits was difficult to leave. It was also, he adds with a note of uncharacteristic nostalgia, a time that would be hard to reinvent today after the intrusion of so many bureaucratic tentacles into the hot zone that spawned Dryden’s greatest achievements.
A man not much given to dwelling on the past, however, Iliff has moved on to a retirement he is making the most of. Together with his wife, Mary Shafer, also retired from her career as a Dryden engineer, he plans to dedicate time to cataloging the couple’s extensive travel experiences with new video and graphics software, and adding to the travel library with footage from new trips. Iraq ranks high on the short list.
During his 40-year tenure, Iliff held the post of senior staff scientist of Dryden’s research division from 1988 to 1994, when he became the Center’s chief scientist. Among numerous awards he received were the prestigious Kelly Johnson Award from the Society of Flight Test Engineers (1989), an award permanently housed in the Smithsonian National Air and Space Museum, and NASA’s highest scientific honor, the NASA Exceptional Scientific Achievement Award (1976).
He was inducted into the National Hall of Fame for Persons with Disabilities in 1987, and served on many national aeronautic and aerospace committees throughout his career. He is a Fellow in the American Institute of Aeronautics and Astronautics (AIAA) and is the author of more than 100 technical papers and reports. He has given eleven invited lectures for NATO and AGARD (Advisory Group for Aerospace Research and Development), and served on four international panels as an expert in aircraft and spacecraft dynamics. Recently, he retired from his position as an adjunct professor of electrical engineering at the University of California, Los Angeles.
Iliff holds dual bachelor of science degrees in mathematics and aerospace engineering from Iowa State University; a master of science in mechanical engineering from the University of Southern California; a master of engineering degree in engineering management and a Ph.D. in electrical engineering, both from UCLA.
Iliff’s is the kind of legacy shared by a select group of American engineers, and to read the papers these days, there’s the suggestion that his is a vanishing breed. NASA and other science-based organizations are often depicted as scrambling for new engineering talent – particularly of the sort personified by Iliff and his pioneering achievements.
But, typical of the visionary approach he applies to life in general as well as to science, Iliff takes a wider view.
“I remember, after the X-1 – people figured all the good things had been done,” he said, with a smile in his voice. “And of course, they had not.
“If I was starting out now, I’d be starting in work with DNA, or biomedicine – improving lives with drug research. There are so many exciting things to be discovered there. They might not be as showy as lighting off a rocket, but they’re there.
“I’ve seen cycles. We’re at a low spot right now – but military, or space, will eventually be at the center again.”
And when that day comes, Iliff says he hopes officials in the flight research world will heed the example of Dryden’s early years, and give its engineers every opportunity to succeed unfettered – as he had been.
“Beware the ‘Chicken Littles’ out there,” he said. “I hope the government will be strong enough to resist them.”
Sarah Merlin
Former X-Press newsletter assistant editor
Former Dryden historian Curtis Peebles contributed to this article.
Share Details Last Updated Oct 29, 2024 EditorDede DiniusContactJay Levinejay.levine-1@nasa.govLocationArmstrong Flight Research Center Related Terms Explore More 5 min read Carissa Arillo: Testing Spacecraft, Penning the Owner’s Manuals Article 13 hours ago 4 min read NASA Group Amplifies Voices of Employees with Disabilities Article 16 hours ago 4 min read Destacado de la NASA: Felipe Valdez, un ingeniero inspirador Article 4 days ago Keep Exploring Discover More Topics From NASAArmstrong Flight Research Center
Armstrong Research & Engineering
Armstrong Technologies
Armstrong People
A Particular Lenticular Cloud
A Particular Lenticular Cloud
Landsat 8’s Operational Land Imager acquired this image of an elongated lenticular cloud, locally nicknamed the “Taieri Pet,” above New Zealand’s South Island on Sept. 7, 2024. Lenticular clouds form when prevailing winds encounter a topographic barrier, such as a mountain range. Wind that is forced to flow up and over the mountains creates a kind of wave in the atmosphere. Air cools at the crest of the wave, and the water vapor it contains condenses into clouds.
Image credit: NASA/Lauren Dauphin; USGS
Station Science Top News: Oct. 25, 2024
Better Monitoring of the Air Astronauts Breathe
Ten weeks of operations showed that a second version of the Spacecraft Atmosphere Monitor is sensitive enough to determine variations in the composition of cabin air inside the International Space Station. Volatile organic compounds and particulates in cabin air could pose a health risk for crew members, and this device increases the speed and accuracy of assessing such risk.
Spacecraft Atmosphere Monitor is a miniaturized gas chromatograph mass spectrometer used to analyze the air inside the space station and ensure that it is safe for the crew and equipment. The device automatically reports results to the ground, eliminating the need to return samples to Earth. This version has several other technological advances, including that it can be relocated, is smaller, and uses less power.
The first Spacecraft Atmosphere Monitor device on the International Space Station. NASA/Chris CassidyDigging Deeper into Microgravity Effects on Muscle
Prolonged exposure to microgravity affects human muscle precursor cells known as satellite cells and causes changes in the expression of specific genes involved in muscle structure and nerves. Exercise regimens on the space station do not adequately prevent or counteract muscle loss in astronauts, which can affect their motor function during missions and after return to Earth. Results could inform design of nutritional and pharmacological countermeasures to muscle changes during spaceflight.
Muscle loss represents a major obstacle to human long-term spaceflight. Myogravity, an investigation developed with the Italian space agency ASI, looked at microgravity-induced changes in adult stem cells involved in the growth, maintenance, and repair of skeletal muscle tissue, known as satellite cells. These cells may play a major role in muscle loss during spaceflight.
European Space Agency astronaut Paolo Nespoli sets up the Myogravity experiment. NASAValidating Next-Generation Earth Measurements
Researchers completed a preliminary evaluation of the station’s Hyperspectral Imager Suite (HISUI) and report that the difference between model-corrected and actual measurements is small. Validation of spaceborne optical sensors like HISUI is important to demonstrate they provide the accuracy needed for scientific research.
The JAXA (Japan Aerospace Exploration Agency) HISUI investigation tests a next-generation spaceborne hyperspectral Earth imaging system for gathering data on reflection of light from Earth’s surface, which reveals characteristics and physical properties of a target area. This technology has potential applications such as monitoring vegetation and identifying natural resources.
The Hyperspectral Imager Suite is visible on the far left in this image outside the space station. NASACarissa Arillo: Testing Spacecraft, Penning the Owner’s Manuals
Flight operations engineer Carissa Arillo helped ensure one of the instruments on NASA’s PACE mission made it successfully through its prelaunch testing. She and her group also documented the work rigorously, to ensure the flight team had a comprehensive manual to keep this Earth-observing satellite in good health for the duration of its mission.
Carissa M. Arillo is a flight operations engineer at NASA’s Goddard Space Flight Center in Greenbelt, Md. Photo courtesy of Carissa ArilloName: Carissa M. Arillo
Formal Job Classification: Flight Operations Engineer
Organization: Environmental Test Engineering and Integration Branch (Code 549)
What do you do and what is most interesting about your role here at Goddard?
I developed pre-launch test procedures for the HARP-2 instrument for the Phytoplankton, Aerosol, Cloud and Ecosystem (PACE) Mission. HARP-2 is a wide angle imaging polarimeter designed to measure aerosol particles and clouds, as well as properties of land and water surfaces.
I also developed the flight operations routine and contingency procedures that governed the spacecraft after launch. It is interesting to think about how to design procedures that can sustain the observatory in space for the life of the mission so that the flight operations team that inherits the mission will have a seamless transition.
What is your educational background?
In 2019, I got a Bachelor of Science in mechanical engineering from the University of Maryland, College Park. I am currently pursuing a master’s in robotics there as well.
Why did you become an engineer?
I like putting things together and understanding how they work. After starting my job at NASA Goddard, I became interested in coding and robotics.
How did you come to Goddard?
After getting my undergraduate degree, I worked at General Electric Aviation doing operations management for manufacturing aircraft engines. When I heard about an opening at Goddard, I applied and got my current position.
What was involved in developing pre-launch test procedures for the HARP-2 instrument?
I talked to the instrument manufacturer, which is a team from the University of Maryland, Baltimore County, and asked them what they wanted to confirm works every time we tested the instrument. We kept in constant communication while developing these test procedures to make sure we covered everything. The end product was code that was part of the comprehensive performance tests, the baseline tests throughout the prelaunch test campaign. Before, during, and after each prelaunch environmental test, we perform such a campaign. These prelaunch environmental tests include vibration, thermal (hot and cold), acoustic and radio frequency compatibility (making sure that different subsystems do not interfere with each other’s).
What goes through your head in developing a flight operations procedure for an instrument?
I think about a safe way of operating the instrument to accomplish the goals of the science team. I also think about not being able to constantly monitor the instrument. Every few hours, we can communicate with the instrument for about five to 10 minutes. We can, however, recover all the telemetry for the off-line time.
When we discover an anomaly, we look at all the history that we have and consult with our contingency procedures, our failure review board and potentially the instrument manufacturer. Together we try to figure out a recovery.
When developing a fight operations procedure, we must think of all possible scenarios. Our end product is a written book of procedures that lives with the mission and is updated as needed.
New cars come with an owner’s manual. We create the same sort of manual for the new instrument.
As a Flight Operations Team member, what else do you do?
The flight operations team runs the Mission Operations Center — the “MOC” — for PACE. That is where we command the spacecraft for the life of the mission. My specialty is the HARP-2 instrument, but I still do many supporting functions for the MOC. For example, I helped develop procedures to automate ground station contacts to PACE. These ground stations are positioned all over the world and enable us to talk with the spacecraft during those five to 10 minutes of communication. This automation includes the standard things we do every time we talk to the spacecraft whether or not someone is in the MOC.
Carissa developed pre-launch test procedures for the HARP-2 instrument for the Phytoplankton, Aerosol, Cloud and Ecosystem (PACE) Mission. HARP-2 is a wide angle imaging polarimeter designed to measure aerosol particles and clouds, as well as properties of land and water surfaces.NASA/Dennis HenryHow does it feel to be working on such an amazing mission so early in your career?
It is awesome, I feel very lucky to be in my position. Everything is new to me. At times it is difficult to understand where the ship is going. I rely on my experienced team members to guide me and my robotics curriculum in school to equip me with skills.
I have learned a lot from both the flight operations team and the integration and test team. The flight operations team has years of experience building MOCs that serve the needs of each unique mission. The integration and test team also has a lot of experience developing observatory functional procedures. I wish to thank both teams for taking me under their wings and educating me on the fly to support the prelaunch, launch and post-launch campaigns. I am very grateful to everyone for giving me this unbelievable opportunity.
Who is your engineering hero?
I don’t have one hero in particular but I love biographical movies that tell stories about influential people’s lives, such as the movie “Hidden Figures” that details the great endeavors and accomplishments of three female African-American mathematicians at NASA.
What do you do for fun?
I love to go to the beach and spend time with family and friends.
Who is your favorite author?
I like Kristen Hannah’s storytelling abilities.
What do you hope to be doing in five years?
I hope to be working on another exciting mission at Goddard that will bring us never-before-seen science.
By Elizabeth M. Jarrell
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Conversations With Goddard is a collection of Q&A profiles highlighting the breadth and depth of NASA’s Goddard Space Flight Center’s talented and diverse workforce. The Conversations have been published twice a month on average since May 2011. Read past editions on Goddard’s “Our People” webpage.
Explore More 7 min read Meloë Kacenelenbogen Eyes the Future of Air Quality, Climate Research Article 1 week ago 6 min read Christine Knudson Uses Earthly Experience to Study Martian GeologyGeologist Christine Knudson works with the Curiosity rover to explore Mars — from about 250…
Article 2 weeks ago 9 min read Systems Engineer Noosha Haghani Prepped PACE for Space Article 3 weeks ago Share Details Last Updated Oct 29, 2024 EditorMadison OlsonContactRob Garnerrob.garner@nasa.govLocationGoddard Space Flight Center Related TermsNASA Sets Coverage for its SpaceX Crew-9 Dragon Station Relocation
In preparation for the arrival of NASA’s SpaceX 31st commercial resupply services mission, four crew members aboard the International Space Station will relocate the agency’s SpaceX Crew-9 Dragon spacecraft to a different docking port Sunday, Nov. 3.
Live coverage begins at 6:15 a.m. EST on NASA+ and will end shortly after docking. Learn how to watch NASA content through a variety of platforms, including social media.
NASA astronauts Nick Hague, Suni Williams, and Butch Wilmore, as well as Roscosmos cosmonaut Aleksandr Gorbunov, will undock the spacecraft from the forward-facing port of the station’s Harmony module at 6:35 a.m., and redock to the module’s space-facing port at 7:18 a.m.
The relocation, supported by flight controllers at NASA’s Johnson Space Center in Houston and the Mission Control team at SpaceX in Hawthorne, California, will free Harmony’s forward-facing port for a Dragon cargo spacecraft mission scheduled to launch no earlier than Monday, Nov. 4.
This will be the fifth port relocation of a Dragon spacecraft with crew aboard following previous moves during the Crew-1, Crew-2, Crew-6, and Crew-8 missions.
Learn more about space station activities by following @space_station and @ISS_Research on X, as well as the ISS Facebook, ISS Instagram, and the space station blog.
NASA’s SpaceX Crew-9 mission launched Sept. 28 from NASA’s Kennedy Space Center in Florida and docked to the space station Sept. 29. Crew-9, targeted to return February 2025, is the company’s ninth rotational crew mission as a part of the agency’s Commercial Crew Program.
Find NASA’s commercial crew blog and more information about the Crew-9 mission at:
https://www.nasa.gov/commercialcrew
-end-
Jimi Russell / Claire O’Shea
Headquarters, Washington
202-358-1100
james.j.russell@nasa.gov / claire.a.o’shea@nasa.gov
Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov
How NASA’s Lunar Trailblazer Could Decipher the Moon’s Icy Secrets
6 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) With one of its solar arrays deployed, NASA’s Lunar Trailblazer sits in a clean room at Lockheed Martin Space. The large silver grate attached to the spacecraft is the radiator for HVM³, one of two instruments that the mission will use to better understand the lunar water cycle.Lockheed Martin SpaceThere’s water on the Moon, but scientists only have a general idea of where it is and what form it is in. A trailblazing NASA mission will get some answers.
When NASA’s Lunar Trailblazer begins orbiting the Moon next year, it will help resolve an enduring mystery: Where is the Moon’s water? Scientists have seen signs suggesting it exists even where temperatures soar on the lunar surface, and there’s good reason to believe it can be found as surface ice in permanently shadowed craters, places that have not seen direct sunlight for billions of years. But, so far, there have been few definitive answers, and a full understanding of the nature of the Moon’s water cycle remains stubbornly out of reach.
This is where Lunar Trailblazer comes in. Managed by NASA’s Jet Propulsion Laboratory and led by Caltech in Pasadena, California, the small satellite will map the Moon’s surface water in unprecedented detail to determine the water’s abundance, location, form, and how it changes over time.
“Making high-resolution measurements of the type and amount of lunar water will help us understand the lunar water cycle, and it will provide clues to other questions, like how and when did Earth get its water,” said Bethany Ehlmann, principal investigator for Lunar Trailblazer at Caltech. “But understanding the inventory of lunar water is also important if we are to establish a sustained human and robotic presence on the Moon and beyond.”
Future explorers could process lunar ice to create breathable oxygen or even fuel. And they could also conduct science. Using information from Lunar Trailblazer, future human or robotic scientific investigations could sample the ice for later study to determine where the water came from. For example, the presence of ammonia in ice samples may indicate the water came from comets; sulfur, on the other hand, could show that it was vented to the surface from the lunar interior when the Moon was young and volcanically active.
This artist’s concept depicts NASA’s Lunar Trailblazer in lunar orbit about 60 miles (100 kilometers) from the surface of the Moon. The spacecraft weighs only 440 pounds (200 kilograms) and measures 11.5 feet (3.5 meters) wide when its solar panels are fully deployed.Lockheed Martin Space“In the future, scientists could analyze the ice in the interiors of permanently shadowed craters to learn more about the origins of water on the Moon,” said Rachel Klima, Lunar Trailblazer deputy principal investigator at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland. “Like an ice core from a glacier on Earth can reveal the ancient history of our planet’s atmospheric composition, this pristine lunar ice could provide clues as to where that water came from and how and when it got there.”
Understanding whether water molecules move freely across the surface of the Moon or are locked inside rock is also scientifically important. Water molecules could move from frosty “cold traps” to other locations throughout the lunar day. Frost heated by the Sun sublimates (turning from solid ice to a gas without going through a liquid phase), allowing the molecules to move as a gas to other cold locations, where they could form new frost as the Sun moves overhead. Knowing how water moves on the Moon could also lead to new insights into the water cycles on other airless bodies, such as asteroids
Two Instruments, One MissionTwo science instruments aboard the spacecraft will help unlock these secrets: the High-resolution Volatiles and Minerals Moon Mapper (HVM3) infrared spectrometer and the Lunar Thermal Mapper (LTM) infrared multispectral imager.
Developed by JPL, HVM3 will detect and map the spectral fingerprints, or wavelengths of reflected sunlight, of minerals and the different forms of water on the lunar surface. The spectrometer can use faint reflected light from the walls of craters to see the floor of even permanently shadowed craters.
The LTM instrument, which was built by the University of Oxford and funded by the UK Space Agency, will map the minerals and thermal properties of the same lunar landscape. Together they will create a picture of the abundance, location, and form of water while also tracking how its distribution changes over time.
“The LTM instrument precisely maps the surface temperature of the Moon while the HVM3 instrument looks for the spectral signature of water molecules,” said Neil Bowles, instrument scientist for LTM at the University of Oxford. “Both instruments will allow us to understand how surface temperature affects water, improving our knowledge of the presence and distribution of these molecules on the Moon.”
Weighing only 440 pounds (200 kilograms) and measuring 11.5 feet (3.5 meters) wide when its solar panels are fully deployed, Lunar Trailblazer will orbit the Moon about 60 miles (100 kilometers) from the surface. The mission was selected by NASA’s SIMPLEx (Small Innovative Missions for Planetary Exploration) program in 2019 and will hitch a ride on the same launch as the Intuitive Machines-2 delivery to the Moon through NASA’s Commercial Lunar Payload Services initiative. Lunar Trailblazer passed a critical operational readiness review in early October at Caltech after completing environmental testing in August at Lockheed Martin Space in Littleton, Colorado, where it was assembled.
The orbiter and its science instruments are now being put through flight system software tests that simulate key aspects of launch, maneuvers, and the science mission while in orbit around the Moon. At the same time, the operations team led by IPAC at Caltech is conducting tests to simulate commanding, communication with NASA’s Deep Space Network, and navigation.
More About Lunar TrailblazerLunar Trailblazer is managed by JPL, and its science investigation and mission operations are led by Caltech with the mission operations center at IPAC. Managed for NASA by Caltech, JPL also provides system engineering, mission assurance, the HVM3 instrument, as well as mission design and navigation. Lockheed Martin Space provides the spacecraft, integrates the flight system, and supports operations under contract with Caltech.
SIMPLEx mission investigations are managed by the Planetary Missions Program Office at NASA’s Marshall Space Flight Center in Huntsville, Alabama, as part of the Discovery Program at NASA Headquarters in Washington. The program conducts space science investigations in the Planetary Science Division of NASA’s Science Mission Directorate at NASA Headquarters.
For more information about Lunar Trailblazer, visit:
https://www.jpl.nasa.gov/missions/lunar-trailblazer
News Media ContactsKaren Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
Ian J. O’Neill
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-2649
ian.j.oneill@jpl.nasa.gov
Gordon Squires
IPAC, Pasadena, Calif.
626-395-3121
squires@ipac.caltech.edu
2024-148
Share Details Last Updated Oct 29, 2024 Related Terms Explore More 4 min read New NASA Instrument for Studying Snowpack Completes Airborne TestingSummer heat has significant effects in the mountainous regions of the western United States. Melted…
Article 18 hours ago 3 min read Gateway: Centering ScienceGateway is set to advance science in deep space, bringing groundbreaking research opportunities to lunar…
Article 18 hours ago 6 min read NASA’s Perseverance Rover Looks Back While Climbing Slippery Slope Article 2 days ago Keep Exploring Discover Related TopicsMissions
Humans in Space
Climate Change
Solar System
NASA Helps Find Thawing Permafrost Adds to Near-Term Global Warming
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) The Permafrost Tunnel north of Fairbanks, Alaska, was dug in the 1960s and is run by the U.S. Army’s Cold Regions Research and Engineering Laboratory. It is the site of much research into permafrost — ground that stays frozen throughout the year, for multiple years.NASA/Kate RamsayerEarth’s far northern reaches have locked carbon underground for millennia. New research paints a picture of a landscape in change.
A new study, co-authored by NASA scientists, details where and how greenhouse gases are escaping from the Earth’s vast northern permafrost region as the Arctic warms. The frozen soils encircling the Arctic from Alaska to Canada to Siberia store twice as much carbon as currently resides in the atmosphere — hundreds of billions of tons — and most of it has been buried for centuries.
An international team, led by researchers at Stockholm University, found that from 2000 to 2020, carbon dioxide uptake by the land was largely offset by emissions from it. Overall, they concluded that the region has been a net contributor to global warming in recent decades in large part because of another greenhouse gas, methane, that is shorter-lived but traps significantly more heat per molecule than carbon dioxide.
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Greenhouse gases shroud the globe in this animation showing data from 2021. Carbon dioxide is shown in orange; methane is shown in purple. Methane traps heat 28 times more effectively than carbon dioxide over a 100-year timescale. Wetlands are a significant source of such emissions.NASA’s Scientific Visualization StudioThe findings reveal a landscape in flux, said Abhishek Chatterjee, a co-author and scientist at NASA’s Jet Propulsion Laboratory in Southern California. “We know that the permafrost region has captured and stored carbon for tens of thousands of years,” he said. “But what we are finding now is that climate-driven changes are tipping the balance toward permafrost being a net source of greenhouse gas emissions.”
Carbon StockpilePermafrost is ground that has been permanently frozen for anywhere from two years to hundreds of thousands of years. A core of it reveals thick layers of icy soils enriched with dead plant and animal matter that can be dated using radiocarbon and other techniques. When permafrost thaws and decomposes, microbes feed on this organic carbon, releasing some of it as greenhouse gases.
Unlocking a fraction of the carbon stored in permafrost could further fuel climate change. Temperatures in the Arctic are already warming two to four times faster than the global average, and scientists are learning how thawing permafrost is shifting the region from being a net sink for greenhouse gases to becoming a net source of warming.
They’ve tracked emissions using ground-based instruments, aircraft, and satellites. One such campaign, NASA’s Arctic-Boreal Vulnerability Experiment (ABoVE), is focused on Alaska and western Canada. Yet locating and measuring emissions across the far northern fringes of Earth remains challenging. One obstacle is the vast scale and diversity of the environment, composed of evergreen forests, sprawling tundra, and waterways.
This map, based on data provided by the National Snow and Ice Data Center, shows the extent of Arctic permafrost. The amount of permafrost underlying the surface ranges from continuous — in the coldest areas — to more isolated and sporadic patches.NASA Earth Observatory Cracks in the SinkThe new study was undertaken as part of the Global Carbon Project’s RECCAP-2 effort, which brings together different science teams, tools, and datasets to assess regional carbon balances every few years. The authors followed the trail of three greenhouse gases — carbon dioxide, methane, and nitrous oxide — across 7 million square miles (18 million square kilometers) of permafrost terrain from 2000 to 2020.
Researchers found the region, especially the forests, took up a fraction more carbon dioxide than it released. This uptake was largely offset by carbon dioxide emitted from lakes and rivers, as well as from fires that burned both forest and tundra.
They also found that the region’s lakes and wetlands were strong sources of methane during those two decades. Their waterlogged soils are low in oxygen while containing large volumes of dead vegetation and animal matter — ripe conditions for hungry microbes. Compared to carbon dioxide, methane can drive significant climate warming in short timescales before breaking down relatively quickly. Methane’s lifespan in the atmosphere is about 10 years, whereas carbon dioxide can last hundreds of years.
The findings suggest the net change in greenhouse gases helped warm the planet over the 20-year period. But over a 100-year period, emissions and absorptions would mostly cancel each other out. In other words, the region teeters from carbon source to weak sink. The authors noted that events such as extreme wildfires and heat waves are major sources of uncertainty when projecting into the future.
Bottom Up, Top DownThe scientists used two main strategies to tally greenhouse gas emissions from the region. “Bottom-up” methods estimate emissions from ground- and air-based measurements and ecosystem models. Top-down methods use atmospheric measurements taken directly from satellite sensors, including those on NASA’s Orbiting Carbon Observatory-2 (OCO-2) and JAXA’s (Japan Aerospace Exploration Agency)Greenhouse Gases Observing Satellite.
Regarding near-term, 20-year, global warming potential, both scientific approaches aligned on the big picture but differed in magnitude: The bottom-up calculations indicated significantly more warming.
“This study is one of the first where we are able to integrate different methods and datasets to put together this very comprehensive greenhouse gas budget into one report,” Chatterjee said. “It reveals a very complex picture.”
News Media ContactsJane J. Lee / Andrew Wang
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-0307 / 626-379-6874
jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov
Written by Sally Younger
2024-147
Share Details Last Updated Oct 29, 2024 Related Terms Explore More 6 min read NASA’s Perseverance Rover Looks Back While Climbing Slippery Slope Article 2 days ago 6 min read NASA Successfully Integrates Coronagraph for Roman Space Telescope Article 2 days ago 3 min read High-Altitude ER-2 Flights Get Down-to-Earth Data Article 5 days ago Keep Exploring Discover Related TopicsMissions
Humans in Space
Climate Change
Solar System
NASA Group Amplifies Voices of Employees with Disabilities
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) Kathy Clark (left) and Ryan D. Brown have both served as chairs of NASA Glenn Research Center’s Disability Awareness Advisory Group, which works to help provide individuals with disabilities equal opportunities in all aspects of employment.Credit: NASA/Jef JanisKathy Clark started her career at NASA’s Glenn Research Center in Cleveland straight out of high school, and when offered either a job as an accountant or a job in training, the choice was crystal clear.
“I started in training, I’ve stayed in training, and I’ll probably retire in training,” said Clark, now a human resources specialist and program manager of NASA Glenn’s mentoring program, Shaping Professionals and Relating Knowledge (SPARK). “I just love people.”
Celebrating 41 years at NASA this October, Clark has long been an advocate for employees. For over 12 years, she served as chair of the center’s Disability Awareness Advisory Group (DAAG), which works to help provide individuals with disabilities equal opportunities in all aspects of employment. The group also strives to identify and eliminate workplace barriers, raise awareness, and ensure accessible facilities.
After recently stepping down, Clark reflects on her legacy of creating change with the group and looks to the next generation of leadership, including longtime member and new chair Ryan D. Brown, to continue its important mission.
“Don’t Let a Disability Stop You”
Clark joined DAAG around 12 years into her career, after she was diagnosed with multiple sclerosis. She was later asked to serve as chair after she helped bring a traveling mural to the center that showcased Ohio artists with disabilities.
During Clark’s time as chair, the group helped secure reserved parking spaces for employees with disabilities, instead of just relying on a first-come first-serve system for accessible spots. She recalls DAAG championing other facility issues, such as fixing a broken elevator and faulty door that presented challenges for folks with disabilities. The group has also worked with human resources to compile best practices for interviews, hosted various speakers, and offered a space for members to share about their disabilities.
“I was honored to be the chair and just be there for the people and to try to make a difference, to let them know, if you need something, reach out,” Clark said. “Don’t let a disability stop you.”
“I was honored to be the chair and just be there for the people and to try to make a difference, to let them know, if you need something, reach out."Kathy clark
“Let’s Go Above and Beyond”
When it was time to choose Clark’s successor, she said, another supportive and vocal member stood out: Brown.
Thanks to an Ohio program for individuals with disabilities, Brown was placed at NASA as an intern in 2006, later completing a co-op that led to a full-time accounting position at the center, where he now works as a lead in the financial systems branch.
More than one in four adults in the United States have some type of disability, according to the U.S. Centers for Disease Control and Prevention, and some are not always easy to see, Brown says. For instance, Brown has an invisible disability: a learning disability related to reading and writing. After connecting with a coworker early in his career who was a member of DAAG, Brown reached out to Clark to join.
“Everyone has their challenges, regardless of if you have a disability or not, so making people comfortable talking about it and bringing it up is always good,” he said. “I think I’ve always liked speaking up for individuals and trying to spread that awareness, which has been great with DAAG.”
Now the chair, Brown has supported the group in developing a job aid to help employees understand how to self-identify as having a disability. They’ve also recently organized awareness events to help other employees understand the experiences and challenges of individuals with disabilities.
DAAG also continues to champion facility updates. For example, the group is currently working to get automatic door openers installed for bathrooms in buildings at the center where many employees gather.
“Let’s try to go above and beyond and really make it easier on individuals,” Brown said.
“Let’s try to go above and beyond and really make it easier on individuals."ryan D. brown
“Make a Difference”
Membership in the group is growing, and Clark looks forward to its future.
“I could not have turned over the chair role to a better person than Ryan,” she said.
Brown’s vision is to continue spreading the word that the group is available as a resource for employees, and for others throughout the center to be more aware of the experiences of individuals with disabilities. The work he does to help others inspires him every day, he says.
“We’re here for individuals that don’t want to speak up, we’re here for individuals if they run into issues – they can always contact us,” Brown said. “It’s all about getting up there and trying to make a difference.”
Explore More 4 min read Destacado de la NASA: Felipe Valdez, un ingeniero inspirador Article 4 days ago 3 min read Event Details Article 5 days ago 5 min read October Transformer of the Month: Nipa Phojanamongkolkij Article 6 days agoNASA Relaunches Mentor-Protégé Program to Fill Supply Chain Gaps
In an effort to grow new commercial markets that support the future of space exploration, scientific discovery, and aeronautics research, NASA is preparing to relaunch its Mentor-Protégé Program for contractors on Friday, Nov. 1.
The program originally was launched to encourage NASA prime contractors, or mentors, to enter into agreements with eligible small businesses, or protégés. These agreements were created to enhance the protégés’ performance on NASA contracts and subcontracts, foster the establishment of long-term business relationships between small businesses and NASA prime contractors, and increase the overall number of small businesses that receive NASA contracts and subcontract awards.
“The NASA Mentor-Protégé Program is a critical enabling tool that allows experienced companies to provide business developmental assistance to emerging firms,” said Dwight Deneal, assistant administrator for NASA’s Office of Small Business Programs (OSBP). “The program enables NASA to expand its industrial base of suppliers, as prime and subcontractors, to assist in executing the mission and programs throughout the agency.”
The program’s relaunch follows an assessment of its policies and procedures by OSBP to ensure it continues to support NASA’s missions and addresses any supply chain gaps at an optimal level.
To provide more information about the program and its relaunch, OSBP will host an online lunch and learn event on Thursday, Nov. 7, at 1:00 p.m. EST. The event is open to all current and potential mentors and protégés who want to learn more about changes in the program, qualifications to participate, and how to apply.
“We are excited about rolling out the enhanced NASA Mentor-Protégé Program,” said David Brock, lead small business specialist for OSBP. “The program’s new focus will allow large businesses to mentor smaller firms in key areas that align with NASA’s mission and opportunities within the agency’s supply chain.”
One key change expands eligibility to all small businesses, in addition to minority-serving institutions, including Historically Black Colleges and Universities, and Ability One entities. This expansion enables the program to support an inclusive environment for more small businesses and underserved communities to interact with NASA and its contractors.
The program also will focus on engaging businesses within a select number of North American Industry Classifications System (NAICS) codes and specific industry sectors, such as research and development and aerospace manufacturing. These adjustments will allow the program to better support NASA’s long-term strategic goals and mission success.
The program is designed to benefit both the mentor and the protégé by fostering productive networking and contract opportunities. In a mentor-protégé agreement, mentors build relationships with small businesses, developing a subcontracting base and accruing credit toward their small business subcontracting goals. In addition, protégés receive technical and developmental assistance while also gaining sole-source contracts from mentors and additional contracting opportunities.
NASA is responsible for the administration and management of each agreement. The OSBP oversees the program and conducts semi-annual performance reviews to monitor progress and accomplishments made as a result of the mentor-protégé agreement.
To apply to be a mentor, companies must be a current NASA prime contractor with an approved small business contracting plan. Companies also must be eligible for the receipt of government contracts and be categorized under certain NAICS codes. Potential protégés must certify as a small business within NAICS size standards.
Find more information about participating in NASA’s Mentor-Protégé Program at:
https://www.nasa.gov/osbp/mentor-protege-program
Share Details Last Updated Oct 29, 2024 LocationNASA Headquarters Related Terms