NASA
NASA’s X-59 Passes Milestone Toward Safe First Flight
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA’s X-59 quiet supersonic research aircraft sits on the ramp at Lockheed Martin Skunk Works in Palmdale, California during sunrise, shortly after completion of painting. With its unique design, including a 38-foot-long nose, the X-59 was built to demonstrate the ability to fly supersonic, or faster than the speed of sound, while reducing the typically loud sonic boom produced by aircraft at such speeds to a quieter sonic “thump”. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to supersonic flight over land, currently banned in the United States, by making sonic booms quieter. NASA/Steve FreemanNASA has taken the next step toward verifying the airworthiness for its quiet supersonic X-59 aircraft with the completion of a milestone review that will allow it to progress toward flight.
A Flight Readiness Review board composed of independent experts from across NASA has completed a study of the X-59 project team’s approach to safety for the public and staff during ground and flight testing. The review board looked in detail at the project team’s analysis of potential hazards, focusing on safety and risk identification.
Flight Readiness Review is the first step in the flight approval process. The board’s work will provide the X-59 team with insights and recommendations toward systems checkouts on the ground and first flight.
“It’s not a pass-fail,” said Cathy Bahm, NASA’s Low Boom Flight Demonstrator project manager. “We’ll be getting actions from the board and will work with them to resolve those and work toward the Airworthiness and Flight Safety Review.”
NASA and prime contractor Lockheed Martin Skunk Works are developing the X-59 to reduce the sound of a sonic boom to a quieter “thump.” The aircraft is at the center of NASA’s Quesst mission, which will use it to gather data that could revolutionize air travel, potentially paving the way for a new generation of commercial aircraft that can travel faster than the speed of sound. Commercial supersonic flight over land has been banned for more than 50 years because of the noise of sonic booms.
“The Flight Readiness Review focused on specific aspects of the X-59 team’s work on the aircraft, but also served as an overview and update on the entire project,” said Jay Brandon, chief engineer for the Low Boom Flight Demonstrator project.
“It gave us the opportunity to stop working for a minute and gather what we’ve done so we could tell our story, not just to the board, but to the whole project team,” Brandon said.
With the Flight Readiness Review complete, the upcoming Airworthiness and Flight Safety Review will be the next safety milestone. The Airworthiness and Flight Safety Review board includes senior leaders from several NASA centers and Skunk Works. It will review findings from the Flight Readiness Review, as well as the project team’s response to those filings. The board will send a recommendation to NASA Armstrong’s center director, who signs the airworthiness certificate.
Finally, the team will provide a technical brief to another review board based on test objectives, how the tests are being carried out, the risks involved, and the risk-mitigation actions the team has taken. The X-59 team would have to address any issues raised in the brief before the board, led by NASA Armstrong chief engineer Cynthia J. “CJ” Bixby, will sign a flight request.
“It’s really an exciting time on the project,” Bahm said. “It’s not an easy road, but there’s a finite set of activities that are in front of us.”
NASA Deputy Administrator Pam Melroy speaks on stage immediately following the unveiling of the agency’s X-59 quiet supersonic research aircraft at a January 12, 2024 event at Lockheed Martin Skunk Works in Palmdale, California. The X-59 is the centerpiece of NASA’s Quesst mission, which seeks to solve one of the major barriers to supersonic flight over land, currently banned in the United States, by making sonic booms quieter.NASA/Steve Freeman The Path ForwardThere are significant steps to be completed before flights can begin. The X-59 team is preparing for upcoming major ground tests focused on systems integration engine runs, and electromagnetic interference.
The X-59 aircraft is a bold, new design, but many of its components are from well-established aircraft, including landing gear from an Air Force F-16 fighter, a cockpit canopy from a NASA T-38 trainer, and a control stick from an Air Force F-117 stealth fighter are among those parts.
“None of these systems have ever worked and played together before,” said Brad Neal, chairman for the X-59 Airworthiness and Flight Safety Review board. “It’s a brand-new thing that we are developing, even though they’re components that have been on different legacy aircraft. As we get into integration testing here, it’s going to be a great opportunity to learn.’’
Share Details Last Updated May 15, 2024 EditorDede DiniusLocationArmstrong Flight Research Center Related Terms Explore More 4 min read NASA Teammates Recall Favorite Memories Aboard Flying Laboratory Article 1 day ago 5 min read Meet NASA Women Behind World’s Largest Flying Laboratory Article 2 days ago 3 min read NASA Licenses 3D-Printable Superalloy to Benefit US Economy Article 6 days ago Keep Exploring Discover More Topics From NASAArmstrong Flight Research Center
Armstrong Aeronautics Projects
Quesst: The Mission
Aeronautics
Good Night, Moon
Good Night, Moon
The waning gibbous moon stands out against the dark backdrop of space in this April 26, 2024, image from the International Space Station. Waning gibbous is one of eight moon phases, occurring after the full moon. The Sun always illuminates half of the Moon while the other half remains dark, but how much we can see of that illuminated half changes as the Moon travels through its orbit. As the Moon begins its journey back toward the Sun, the lighted side appears to shrink, but the Moon’s orbit is simply carrying it out of view from our perspective.
See NASA’s interactive map for observing the Moon—from Earth—every day of the year.
Image Credit: NASA
Hubble Views the Dawn of a Sun-like Star
2 min read
Hubble Views the Dawn of a Sun-like Star This NASA Hubble Space Telescope image captures a triple-star star system. NASA, ESA, G. Duchene (Universite de Grenoble I); Image Processing: Gladys Kober (NASA/Catholic University of America)Download this image
Looking like a glittering cosmic geode, a trio of dazzling stars blaze from the hollowed-out cavity of a reflection nebula in this new image from NASA’s Hubble Space Telescope. The triple-star system is made up of the variable star HP Tau, HP Tau G2, and HP Tau G3. HP Tau is known as a T Tauri star, a type of young variable star that hasn’t begun nuclear fusion yet but is beginning to evolve into a hydrogen-fueled star similar to our Sun. T Tauri stars tend to be younger than 10 million years old ― in comparison, our Sun is around 4.6 billion years old ― and are often found still swaddled in the clouds of dust and gas from which they formed.
As with all variable stars, HP Tau’s brightness changes over time. T Tauri stars are known to have both periodic and random fluctuations in brightness. The random variations may be due to the chaotic nature of a developing young star, such as instabilities in the accretion disk of dust and gas around the star, material from that disk falling onto the star and being consumed, and flares on the star’s surface. The periodic changes may be due to giant sunspots rotating in and out of view.
The box in the ground-based image reveals the location of Hubble’s view within the wider context of this triple-star system. NASA, ESA, G. Duchene (Universite de Grenoble I); Image Processing: Gladys Kober (NASA/Catholic University of America); Inset: KPNO/NOIRLab/NSF/AURA/T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab)Curving around the stars, a cloud of gas and dust shines with their reflected light. Reflection nebulae do not emit visible light of their own, but shine as the light from nearby stars bounces off the gas and dust, like fog illuminated by the glow of a car’s headlights.
HP Tau is located approximately 550 light-years away in the constellation Taurus. Hubble studied HP Tau as part of an investigation into protoplanetary disks, the disks of material around stars that coalesce into planets over millions of years.
Media Contact:
Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
Stars
Stars Stories
Galaxies Stories
Space Physics and Space Weather Scientist Dr. Yihua (Eva) Zheng
“I grew up in China. In China, everybody talks about what they want to be [when they grow up]. Many want to grow up to be a scientist or engineer. So I aspired to be a scientist from an early age.
“… For the girls or women in science — or in any profession or job — opportunities are more abundant than they were previously. Sometimes you need to take bold steps. Just a little push, and then you will get there. I initially started as a foreign national, so not a lot of opportunities existed for a foreign national, and some of them [required a] green card or citizenship. I think it’s hard, but still, there is a path forward. I think it’s important to work hard and be optimistic, and you will find something.”
—Dr. Yihua (Eva) Zheng, Space Physics and Space Weather Scientist, Heliophysics Science Division, NASA’s Goddard Space Flight Center
Image Credit: NASA/Thalia Patrinos
Interviewer: NASA/Thalia Patrinos
Binoculars: A Great First Telescope
3 min read
Binoculars: A Great First Telescope A pair of good binoculars can show craters on the Moon around 6 miles (10 km) across and larger. How large is that? It would take you about two hours to hike across a similar-sized crater on Earth. The “Can You See the Flag On the Moon?” handout showcases the levels of detail that different instruments can typically observe on the Moon. Jay TannerDo you want to peer deeper into the night sky? Are you feeling the urge to buy a telescope? There are so many options for budding astronomers that choosing one can be overwhelming. A first telescope should be easy to use and provide good quality views while being affordable. As it turns out, those requirements make the first telescope of choice for many stargazers something unexpected: a good pair of binoculars!
Binoculars are an excellent first instrument because they are generally easy to use and more versatile than most telescopes. Binoculars can be used for activities like stargazing and birdwatching and work great in the field at a star party, along the hiking trail, and anywhere else where you can see the sky. Binoculars also travel well, since they easily fit into carry-on luggage – a difficult feat for most telescopes! A good pair of binoculars, ranging in specifications from 7×35 to 10×50, will give you great views of the Moon, large open star clusters like the Pleiades (M45), and, from dark skies, larger bright galaxies like the Andromeda Galaxy (M31) and large nebulae like the Orion Nebula (M42). While you likely won’t be able to see Saturn’s rings, as you practice your observing skills you may be able to spot Jupiter’s moons, along with some globular clusters and fainter nebulae from dark sites, too.
The two most popular types of binocular designs are shown here: roof-prism binoculars (left) and porro-prism binoculars (right). Roof prisms tend to be more compact, lighter, and a bit more portable, while porro-prisms tend to be heavier but often offer wider views and greater magnification. What should you choose? Many birders and frequent fliers often choose roof-prism models for their portability. Many observers who prefer to observe fainter deep-sky objects or who use a tripod with their observing choose larger porro-prism designs. There is no right answer, so if you can, try out both designs and see which works better for you. Astronomical Society of the PacificWhat do the numbers on those binocular specs actually mean? The first number is the magnification, while the second number is the size in millimeters (mm) of the lenses. So, a 7×35 pair of binoculars means that they will magnify 7 times using lenses 35 mm in diameter. It can be tempting to get the biggest binoculars you can find but try not to get anything much more powerful than a 10×50 pair at first. Larger binoculars with more power often have narrower fields of vision and are heavier; while technically more powerful, they are also more difficult to hold steadily in your hands and “jiggle” quite a bit unless you buy much more expensive binoculars with image stabilization or mount them to a tripod.
Would it surprise you that amazing views of some astronomical objects can be found not just from giant telescopes, but also from seemingly humble binoculars? Binoculars are able to show a much larger field of view of the sky compared to most telescopes. For example, most telescopes are unable to keep the entirety of the Pleiades or Andromeda Galaxy entirely inside the view of most eyepieces. Binoculars are also a great investment for more advanced observing, as later on they are useful for tracking down objects to then observe in more detail with a telescope.
If you are able to do so, real-world advice and experience is still the best for something you will be spending a lot of time with! Going to an in-person star party hosted by a local astronomy club is a great way to get familiar with telescopes and binoculars of all kinds – just ask permission before taking a closer look! You can find clubs and star parties near you on the Night Sky Network’s Clubs & Events page at bit.ly/nsnclubsandevents and inspire your binocular stargazing sessions with NASA’s latest discoveries!
Originally posted by Dave Prosper: November 2022
Last Updated by Kat Troche: April 2024
Eleasa Kim: Pioneering CLDP Payload Operations and Cultural Integration
Eleasa Kim, stationed at NASA’s Marshall Space Flight Center, leads the Commercial Low Earth Orbit Development Program (CLDP) payload operations at Johnson Space Center, with 18 years of mission support under her belt. Her roles have included biomedical engineer flight controller, payload safety engineer for Artemis I, planning and analysis branch operations discipline lead, and glovebox integration engineer, with each enriching her understanding of engineering, safety, and leadership.
Kim is currently working to ensure a smooth transition to commercial space operations for the science being conducted in microgravity for the benefit of humanity.
Eleasa Kim tests eye imaging hardware for the astronauts to use aboard the International Space Station.Kim evaluates plans and documentation for commercial space stations, prepares materials for research operations, and devises strategies to enhance partner success and sustain the low Earth orbit economy. “I love the trust and support we are provided to brainstorm and offer recommendations for transitioning space station operations to commercial platforms,” she said.
As the lead of the Human Exploration and Development Office’s (HEDO) Unity Team at Marshall, Kim is championing a culture of safety and inclusivity while leading a group of 15 people that represent every office and branch within HEDO. Kim and her team are tackling complex topics to enhance organizational culture. “We are promoting inclusion of everyone and more education and communication on topics that are not easy to talk about,” she said.
NASA’s Human Exploration and Development Office (HEDO) 2024 Unity Team at their kickoff meeting. From left: Sheena Hawthorne, Eleasa Kim, Glenn Medina, Johnathan Carlson, Jennifer Christopher, Jenni Deylius, Carol Reynolds, Brooke Thornton, Sherresa Lockett, April Hargrave, Phillippia Simmons, DeAnna Whitehead, Tishawn Webb, Stacey Kelley, Ginger Flores, Wendy Cruit, and Luke Bingaman.“A large part of my identity is recognizing that people come first,” said Kim. “I take the opportunities to connect with and meet people where they are. I try to figure out how I can add value.”
Although it is tough for her to pick her favorite project or program she has worked on at NASA, one of her most cherished experiences was during her tenure as an International Space Station biomedical engineer, where she completed a parabolic flight to test vital crew health support hardware. “My favorite part was learning what it meant to have a family at work that I trusted and could count on,” she said.
Eleasa Kim performs inverted CPR in a zero-gravity parabolic flight.In her other previous roles, she most enjoyed learning about science experiments as a payloads planner and playing a critical role in their success. As a payload safety engineer for Artemis I, she loved being able to deep dive into complex and specific problems and learn about safety risk and probability. As the planning and analysis branch operations discipline lead at Marshall, Kim says she loved learning about analyzing performance metrics, reporting, and providing leadership to multiple teams.
Kim emphasizes the importance of staying curious and adaptable, recognizing that each role and team presents unique cultural and technical challenges. She says, “When faced with a challenge, I can overcome a lot more than I think by asking myself, ‘How can I do this?’”
Eleasa Kim served as the International Space Station lead biomedical engineer for Space Shuttle mission STS-119. Credit: NASA/Devin BoldtShe has supported real-time mission operations, pre-mission planning, safety, engineering, and project management roles. “It takes time to get oriented each time I move into a team,” she said. “While challenging, it is also very exciting and motivating for me because I’m passionate about knowing people and learning new things.”
Kim believes that NASA is actively driving change, emphasizing the importance of consistent communication from every individual. This approach, reminiscent of “boots on the ground,” is reshaping the agency’s culture from its foundation. “We can and are changing the culture from the bottom up, and NASA is providing the enabling function of management support,” she said. “We need to provide safe spaces for people to be vulnerable and help ensure everyone feels safe to contribute.”
Eleasa Kim during a ski trip with her two children.Kim’s cultural heritage is rooted in South Korea, where her parents originated before emigrating to the United States. Raised in America, she has a profound appreciation for Korean culture, especially its cuisine, and enjoys cooking traditional meals and sharing them with friends and colleagues.
Kim says she is most proud of being a mother of two kind, beautiful, sharp, strong-willed, and passionate girls.
She hopes to pass on to the next generation the inspiration to do great things for all of humanity, as did those who came before us. “I am excited to see what commercial and international growth will bring in the next decade.”
Mission Manager Update: VIPER Rover Approved to Move into Environmental Testing!
While NASA’s VIPER team has been focused on building the flight rover that will go to the South Pole of the Moon, the team has also been making preparations for environmental testing of the rover.
In April, the VIPER team passed a System Test Readiness Review, exploring the readiness of the facilities, procedures, and staff to move into stress-testing the VIPER rover.
These environmental tests are important because they force our rover to experience the conditions it will see during launch, landing, and in the thermal environment of operating at the lunar South Pole. Specifically, acoustic testing will simulate the harsh, vibrational “rock concert” experience of launch, while thermal-vacuum testing will expose VIPER to the hottest and coldest temperatures it will see during the mission, all while operating in the vacuum of space. It’s a tough business, but we have to make sure we’re up for it.
Thanks to this team for the hard efforts to get to this important phase in mission readiness!
Go VIPER!
– Dan Andrews, VIPER Project Manager
Sols 4184-4185: Look Near! Look Far!
3 min read
Sols 4184-4185: Look Near! Look Far! This image was taken by Left Navigation Camera onboard NASA’s Mars rover Curiosity on Sol 4183 (2024-05-13 02:30:29 UTC). NASA/JPL-CaltechEarth planning date: Monday, May 13, 2024
Today I’ve chosen to show off a spectacular image of ‘Texoli butte,’ but I’m rather biased in my assessment of its beauty because I am currently part of the team studying it. What continues to marvel me is Curiosity’s incredible suite of instruments that can not only help us to assess the rocks around us, but can be used to see very high detail of rocks hundreds of meters away – like Texoli butte – and today we took advantage of those superpowers!
ChemCam is looking far away for us over the next 2 sols, starting with a long-distance RMI of Texoli butte. On the second sol, we are looking at a structure further up Gediz Vallis channel that we won’t be driving up to named ‘Milestone Peak.’ The long-distance observations are really useful in ensuring we can see everything we need to, even if we don’t drive super close. We then take a glimpse between the buttes of Gediz Vallis and above the sulfate-bearing unit we are currently driving in to the yardang unit for the final long-distance RMI of this plan. We can also use Curiosity’s super vision to look at the atmosphere! Over the next 2 sols, Mastcam will measure the amount of dust in the atmosphere in a tau measurement, and Navcam will take a suprahorizon movie as well as being on the lookout for dust devils.
As well as really far away, Curiosity is a specialist at looking and taking measurements of rocks right in front of us. Curiosity will be taking APXS measurements and MAHLI observations on two nearby rocks named ‘Tenaya Lake’ and ‘Buck Lake.’ On the same rock as Buck Lake, ChemCam will be taking a LIBS measurement on a target named ‘Illilouette Falls,’ and another rock a little further away called ‘Redwood Canyon,’ as well as a passive observation on a dark-toned rock named ‘Cox Col.’ Mastcam will document these observations, as well as looking back at the south side of Pinnacle Ridge we have just driven around. In total, Mastcam will spend 1 hour documenting the rocks here at the Gediz Vallis Ridge, including a 15×3 mosaic during an early morning wake-up call at 07:30 to take advantage of the morning light on Mars.
The science team did a wonderful job today documenting all things near and far in this beautiful workspace. As the Keeper of the Plan for the Geology and Mineralogy theme group today, I really enjoyed helping to make this plan a reality, and I can’t wait to see all the fantastic images and data we get back from Mars.
Written by Emma Harris, Graduate Student at Natural History Museum
Share Details Last Updated May 14, 2024 Related Terms Explore More 3 min read Sols 4182-4183: We Reached the South Side of Pinnacle Ridge… What’s Next?Article
4 days ago
3 min read Sols 4180-4181: Imaging fest!
Article
6 days ago
2 min read Sols 4178-4179: The Pinnacle Ridge Scarp
Article
6 days ago
Keep Exploring Discover More Topics From NASA Mars
Mars is no place for the faint-hearted. It’s dry, rocky, and bitter cold. The fourth planet from the Sun, Mars…
All Mars Resources
Rover Basics
Mars Exploration Science Goals
NASA Tests Technology, Practices Artemis Moonwalks in Arizona Desert
To prepare for exploring the Moon during NASA’s Artemis campaign, the agency is conducting a week-long field test in the lunar-like landscape of San Francisco Volcanic Field near Flagstaff, Arizona to practice moonwalk scenarios.
NASA astronauts Kate Rubins and Andre Douglas are serving as the crewmembers and wearing mockup spacesuit systems as they traverse through the desert, completing a variety of technology demonstrations, hardware checkouts and Artemis science-related operations.
During the test, two integrated teams will work together as they practice end-to-end lunar operations. The field team consists of astronauts, NASA engineers, and field experts in the Arizona desert conducting the simulated moonwalks, while a team of flight controllers and scientists at NASA’s Johnson Space Center in Houston monitor and guide their activities.
NASA astronaut Kate Rubins observes a geology sample she collected during a simulated moonwalk. NASA/Josh Valcarcel“Field tests play a critical role in helping us test all of the systems, hardware, and technology we’ll need to conduct successful lunar operations during Artemis missions,” said Barbara Janoiko, director for the field test at Johnson. “Our engineering and science teams have worked together seamlessly to ensure we are prepared every step of the way for when astronauts step foot on the Moon again.”
The test consists of four simulated moonwalks that follow operations planned for Artemis III and beyond, as well as six advanced technology runs. During the advanced runs, teams will demonstrate technology that may be used for future Artemis missions, such as display and navigation data stream capabilities in the form of a heads-up display using augmented reality or lighting beacons that could help guide crew back to the lander.
Ahead of the field test, the science team at Johnson that was competitively selected and tasked with developing the science objectives for the field test, followed a planning process designed for Artemis missions. Their preparation included generating geologic maps, a list of science questions, and prioritized moonwalk locations for both the primary and back-up “landing sites” for the test.
“During Artemis III, the astronauts will be our science operators on the lunar surface with an entire science team supporting them from here on Earth,” said Cherie Achilles, science officer for the test at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “This simulation gives us an opportunity to practice conducting geology from afar in real time.”
NASA astronaut Andre Douglas collects soil samples during the first in a series of four simulated moonwalks in Arizona. NASA/Josh ValcarcelThe test will evaluate gaps and challenges associated with lunar South Pole operations, including data collection and communications between the flight control team and science team in Houston for rapid decision-making protocols.
At the conclusion of each simulated moonwalk, the science team, flight control team, crewmembers, and field experts will come together to discuss and record lessons learned. NASA will take these lessons and apply them to operations for NASA’s Artemis missions, commercial vendor development, and other technology development.
This field test is the fifth in the series conducted by the Joint Extravehicular Activity and Human Surface Mobility Test Team led out of Johnson. This test expands on previous field tests the team has performed and is the highest fidelity Artemis moonwalk mission simulation to date.
NASA uses field tests to simulate missions to prepare for deep space destinations. The Arizona desert has been a training ground for lunar exploration since the Apollo era because of the many similarities to the lunar terrain, including craters, faults and volcanic features.
Through Artemis, NASA will land the first woman, the first person of color, and its first international partner astronaut on the Moon, paving the way for long-term lunar exploration and serving as a steppingstone for astronaut missions to Mars.
Learn more about NASA’s Extravehicular Activity and Human Surface Mobility Program:
https://www.nasa.gov/extravehicular-activity-and-human-surface-mobility/
How ‘Glowing’ Plants Could Help Scientists Predict Flash Drought
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) In a field in western Kentucky, a machine sprays cover crops to prepare for planting season. NASA scientists are looking to space-based tools to help forecast fast, stealthy droughts responsible for severe agricultural losses in recent years.U.S. Department of Agriculture/Justin PiusAn unusual boost in plant productivity can foreshadow severe soil water loss. NASA satellites are following the clues.
Flaring up rapidly and with little warning, the drought that gripped much of the United States in the summer of 2012 was one of the most extensive the country had seen since the yearslong Dust Bowl of the 1930s. The “flash drought,” stoked by extreme heat that baked the moisture from soil and plants, led to widespread crop failure and economic losses costing more than $30 billion.
While archetypal droughts may develop over seasons, flash droughts are marked by rapid drying. They can take hold within weeks and are tough to predict. In a recent study, a team led by scientists from NASA’s Jet Propulsion Laboratory in Southern California was able to detect signs of flash droughts up to three months before onset. In the future, such advance notice could aid mitigation efforts.
How did they do it? By following the glow.
A Signal Seen From SpaceDuring photosynthesis, when a plant absorbs sunlight to convert carbon dioxide and water into food, its chlorophyll will “leak” some unused photons. This faint glow is called solar-induced fluorescence, or SIF. The stronger the fluorescence, the more carbon dioxide a plant is taking from the atmosphere to power its growth.
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Growing plants emit a form of light detectable by NASA satellites orbiting hundreds of miles above Earth. Parts of North America appear to glimmer in this visualization, depicting an average year. Gray indicates regions with little or no fluorescence; red, pink, and white indicate high fluorescence.NASA’s Scientific Visualization StudioWhile the glow is invisible to the naked eye, it can be detected by instruments aboard satellites such as NASA’s Orbiting Carbon Obsevatory-2 (OCO-2). Launched in 2014, OCO-2 has observed the U.S. Midwest aglow during the growing season.
The researchers compared years of fluorescence data to an inventory of flash droughts that struck the U.S. between May and July from 2015 to 2020. They found a domino effect: In the weeks and months leading up to a flash drought, vegetation initially thrived as conditions turned warm and dry. The flourishing plants emitted an unusually strong fluorescence signal for the time of year.
But by gradually drawing down the water supply in the soil, the plants created a risk. When extreme temperatures hit, the already low moisture levels plummeted, and flash drought developed within days.
The team correlated the fluorescence measurements with moisture data from NASA’s SMAP satellite. Short for Soil Moisture Active Passive, SMAP tracks changes in soil water by measuring the intensity of natural microwave emissions from Earth’s surface.
The scientists found that the unusual fluorescence pattern correlated extremely well with soil moisture losses in the six to 12 weeks before a flash drought. A consistent pattern emerged across diverse landscapes, from the temperate forests of the Eastern U.S. to the Great Plains and Western shrublands.
For this reason, plant fluorescence “shows promise as a reliable early warning indicator of flash drought with enough lead time to take action,” said Nicholas Parazoo, an Earth scientist at JPL and lead author of the recent study.
Jordan Gerth, a scientist with the National Weather Service Office of Observations who was not involved in the study, said he was pleased to see work on flash droughts, given our changing climate. He noted that agriculture benefits from predictability whenever possible.
While early warning can’t eliminate the impacts of flash droughts, Gerth said, “farmers and ranchers with advanced operations can better use water for irrigation to reduce crop impacts, avoid planting crops that are likely to fail, or plant a different type of crop to achieve the most ideal yield if they have weeks to months of lead time.”
Tracking Carbon EmissionsIn addition to trying to predict flash droughts, the scientists wanted to understand how these impact carbon emissions.
By converting carbon dioxide into food during photosynthesis, plants and trees are carbon “sinks,” absorbing more CO2 from the atmosphere than they release. Many kinds of ecosystems, including farmlands, play a role in the carbon cycle — the constant exchange of carbon atoms between the land, atmosphere, and ocean.
The scientists used carbon dioxide measurements from the OCO-2 satellite, along with advanced computer models, to track carbon uptake by vegetation before and after flash droughts. Heat-stressed plants absorb less CO2 from the atmosphere, so the researchers expected to find more free carbon. What they found instead was a balancing act.
Warm temperatures prior to the onset of flash drought tempted plants to increase their carbon uptake compared to normal conditions. This anomalous uptake was, on average, sufficient to fully offset decreases in carbon uptake due to the hot conditions that ensued. The surprising finding could help improve carbon cycle model predictions.
Celebrating its 10th year in orbit this summer, the OCO-2 satellite maps natural and human-made carbon dioxide concentrations and vegetation fluorescence using three camera-like spectrometers tuned to detect the unique light signature of CO2. They measure the gas indirectly by tracking how much reflected sunlight it absorbs in a given column of air.
The OCO-2 project and SMAP are managed by JPL. Caltech manages JPL for NASA. To read more about them, go to:
and
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
2024-065
Share Details Last Updated May 14, 2024 Related Terms Explore More 4 min read NASA Teammates Recall Favorite Memories Aboard Flying Laboratory Article 1 day ago 5 min read Meet NASA Women Behind World’s Largest Flying Laboratory Article 2 days ago 6 min read International SWOT Mission Can Improve Flood Prediction Article 1 week ago Keep Exploring Discover Related TopicsMissions
Humans in Space
Climate Change
Solar System
NASA’s DC-8 to Fly Low Altitude Over Pocatello, Idaho, for Final Flight
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA’s DC-8 aircraft.NASANASA’s DC-8 aircraft will fly at low altitude over Pocatello, Idaho, and surrounding areas during its final flight from NASA’s Armstrong Flight Research Center in Edwards, California, to Idaho State University.
After 37 years of successful airborne science missions, the DC-8 aircraft is retiring at Idaho State University, where it will be used to train future aircraft technicians by providing hands-on experience at the college’s Aircraft Maintenance Technology Program.
Residents in the areas below will see and hear the aircraft as it flies to its new and final home.
Where: Pocatello, Idaho (and surrounding areas).
When: Wednesday, May 15, between 2:00-2:30 PM.
Additional details: All flyovers are conducted at a safe altitude without harm to public, wildlife, or infrastructure. Jet aircraft are loud and those with sensitivity to loud noises should be aware of the flyover window.
To follow along real-time with the DC-8’s flight path, visit https://airbornescience.nasa.gov/tracker/#!/status/list, or:
- Go to www.FlightAware.com , or download the app.
- Type the aircraft tail number in the search bar: N817NA.
- Follow the aircraft in real time!
Learn more:
- About the DC-8 aircraft: https://www.nasa.gov/centers-and-facilities/armstrong/dc-8-aircraft/.
- About the DC-8’s retirement: https://www.nasa.gov/image-article/nasas-dc-8-completes-final-mission-set-to-retire/.
-end-
For more information, contact:
Erica Heim
NASA’s Armstrong Flight Research Center, Edwards, California
650-499-9053
erica.heim@nasa.gov
Earth planning date: Monday, May 13, 2024 Today I’ve chosen to show off a spectacular image…
Article 2 hours ago Keep Exploring Discover More Topics From NASAArmstrong Flight Research Center
Armstrong Science Projects
Aircraft Flown at Armstrong
Science in the Air
NASA’s DC-8 to Fly Low Altitude Over San Jose, California, for Final Flight
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) NASA’s DC-8 aircraft.NASANASA’s DC-8 aircraft will fly at low altitude over San Jose and surrounding areas during its final flight from NASA’s Armstrong Flight Research Center in Edwards, California, to Idaho State University in Pocatello, Idaho.
After 37 years of successful airborne science missions, the DC-8 aircraft is retiring at Idaho State University, where it will be used to train future aircraft technicians by providing hands-on experience at the college’s Aircraft Maintenance Technology Program.
Residents in the areas below will see and hear the aircraft as it flies to its new and final home.
Where: San Jose, Mountain View, California (and surrounding areas).
When: Wednesday, May 15, between 11:00-11:30 AM.
Additional details: All flyovers are conducted at a safe altitude without harm to public, wildlife, or infrastructure. Jet aircraft are loud and those with sensitivity to loud noises should be aware of the flyover window.
To follow along real-time with the DC-8’s flight path, visit https://airbornescience.nasa.gov/tracker/#!/status/list, or:
- Go to www.FlightAware.com , or download the app.
- Type the aircraft tail number in the search bar: N817NA.
- Follow the aircraft in real time!
Learn more:
- About the DC-8 aircraft: https://www.nasa.gov/centers-and-facilities/armstrong/dc-8-aircraft/.
- About the DC-8’s retirement: https://www.nasa.gov/image-article/nasas-dc-8-completes-final-mission-set-to-retire/.
-end-
For more information, contact:
Erica Heim
NASA’s Armstrong Flight Research Center, Edwards, California
650-499-9053
erica.heim@nasa.gov
Earth planning date: Monday, May 13, 2024 Today I’ve chosen to show off a spectacular image…
Article 2 hours ago Keep Exploring Discover More Topics From NASAArmstrong Flight Research Center
Armstrong Science Projects
Aircraft Flown at Armstrong
Science in the Air
