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Linette Boisvert turned a childhood love of snow into a career as a sea ice scientist studying climate change.

Name: Linette Boisvert
Title: Assistant Lab Chief, Cryospheric Sciences Branch, and Deputy Project Scientist for the Aqua Satellite
Formal Job Classification: Sea Ice Scientist
Organization: Cryospheric Science Branch, Science Directorate (Code 615)

“When it snowed, school was cancelled so I loved winter weather, and I was fascinated how weather could impact our daily lives,” said Linette. “One of my undergraduate classes had a guest lecturer talk about the Arctic and that is when decided that I wanted to become an Arctic scientist.”Photo credit: NASA/Kyle Krabill

What do you do and what is most interesting about your role here at Goddard? 

As a sea ice scientist, I study interactions between the sea ice and the atmosphere. I’m interested in how the changing sea ice conditions and loss of Arctic ice are affecting the atmospheric conditions in the Artic. 

Why did you become a sea ice scientist? What is your educational background?  

I grew up in Maryland. When it snowed, school was cancelled so I loved winter weather, and I was fascinated how weather could impact our daily lives. One of my undergraduate classes had a guest lecturer talk about the Arctic and that is when decided that I wanted to become an Arctic scientist. This also coincided with the Arctic sea ice minimum in 2007, at the time, a record low.

In 2008, I got a B.S. in environmental science with a minor in math from the University of Maryland, Baltimore County (UMBC). I received my master’s and, in 2013, got a Ph.D. in atmospheric and oceanic sciences from the University of Maryland, College Park.

How did you come to Goddard?

My doctorate advisor worked at Goddard. In 2009, he brought me into Goddard’s lab to do my Ph.D. research. I became a post-doctorate in 2013, an assistant research scientist in 2016 (employed by UMD/ESSIC) and, in 2018, a civil servant.

Dr. Linette Boisvert is a sea ice scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md. Photo credit: NASA/Jeremy Harbeck

What is the most interesting field work you do as the assistant lab chief of Goddard’s Cryospheric Sciences Branch?

From 2018 to 2020, I was the deputy project scientist for NASA’s largest and longest running airborne campaign, Operation IceBridge. This involved flying aircraft with scientific instruments over both land ice and sea ice in the Arctic and Antarctic. Every spring, we would set up a base camp in a U.S. Air Force base in Greenland and fly over parts of the sea ice over Greenland and the Arctic, and in the fall we would base out of places like Punta Arenas, Chile, and Hobart, Australia, to fly over the Antarctic. 

We would fly low, at 1,500 feet above the surface. It is very, very cool to see the ice firsthand. It is so pretty, so vast, and complex. We would spend 12 hours a day on a plane just surveying the ice.

Being based out of Greenland is very remote. Everything is white. Everything looks like it is closer than it is. You do not have a point of reference for any perspective. It is very quiet. There is no background ambient noise. You do not hear bugs, birds, or cars, just quiet. 

Our team was about 20 people. Other people live at the base. The campaigns lasted six to eight weeks. I was there about three to four weeks each time. Many of the group had been doing these campaigns for a decade. I felt like I had joined a family. In the evenings, we would often cook dinner together and play games. On days we could not fly, we would go on adventures together like visiting a glacier or hiking. We saw musk ox, Arctic fox, Arctic hares, and seals. 

How did it feel to become the deputy project scientist for the Aqua satellite, which provided most of the data you used for your doctorate and publications?

In January 2023, I became the deputy project scientist for the Aqua satellite, which launched in 2002. Aqua measures the Earth’s atmospheric temperature, humidity, and trace gases. Most of my doctorate and publications used data from Aqua to look at how the sea ice loss in the Arctic is allowing for excess heat and moisture from the ocean to move into the atmosphere resulting in a warmer and wetter Arctic. 

I am honored. I feel like I have come full circle. The team welcomed me into the mission and taught me a lot of things. I am grateful to be working with such a brilliant, hardworking team.

Who is your science hero?

My father encouraged me to get a doctorate in science. My father has a doctorate in computer science and math. He works at the National Institute of Standards and Technology. I wanted to be like him when I was growing up. I came close, working at NASA, another part of the federal government. My mother, a French pastry chef, always kept me well fed.

“We would fly low, at 1,500 feet above the surface,” said Linette. “It is very, very cool to see the ice firsthand. It is so pretty, so vast, and complex. We would spend 12 hours a day on a plane just surveying the ice.”Photo credit: NASA/John Sonntag

My father is very proud of me. He thinks I am more of a superstar than he was at my age, but I do not believe it. My mother is also proud and continues to keep me well fed.

Who is your Goddard mentor?

Claire Parkinson, now an emeritus, was the project scientist for Aqua since its inception. When she retired, she encouraged me to apply for the deputy position. She had confidence in me which gave me the confidence to apply for the position. She is still always available to answer any questions. I am very thankful that she has been there for me throughout my career.

What advice do you give to those you mentor?

I recently began advising young scientists; one undergraduate student, two graduate students, and one post-doctoral scientist. We meet weekly as a group and have one-on-one meetings when appropriate. They share their progress on their work. Sometimes we practice presentations they are about to give. 

It is sometimes hard starting out to think that you are smart because Goddard is full of so many smart people. I tell them that they are just as capable when it comes to their research topic. I tell them that they fit in well with the Goddard community. I want to create a comfortable, respectful, and inclusive environment so that they remain in science. 

What do you do for fun?

I enjoy running and paddle boarding with my dog Remi, my long-haired dachshund. I enjoy reading. I love to travel and be around friends and family. But I do not enjoy cooking, so I do not bake French pastries like my mom. 

Where do you see yourself in five years?

I hope to continue doing research including field work. It would be great if some of my students finished their studies and joined my lab. I hope that I am still making people proud of me. 

What is your “six-word memoir”? A six-word memoir describes something in just six words.

Hard-working. Smart. Inquisitive. Adventurous. Kind. Happy. 

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.

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Details Last Updated Sep 10, 2024 EditorMadison OlsonContactRob Garnerrob.garner@nasa.govLocationGoddard Space Flight Center Related Terms

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On Sept. 10, 2009, the Japan Aerospace Exploration Agency (JAXA) launched its first cargo delivery spacecraft, the H-II Transfer Vehicle-1 (HTV-1), to the International Space Station. The HTV cargo vehicles, also called Kounotori, meaning white stork in Japanese, not only maintained the Japanese Experiment Module Kibo but also resupplied the space station in general with pressurized and unpressurized cargo and payloads. Following its rendezvous with the space station, Expedition 20 astronauts grappled and berthed HTV-1 on Sept. 17, and spent the next month transferring its 9,900 pounds of internal and external cargo to the space station and filling the HTV-1 with trash and unneeded equipment. They released the craft on Oct. 30 and ground controllers commanded it to a destructive reentry on Nov. 1.

Left and middle: Two views of the HTV-1 Kounotori cargo spacecraft during prelaunch processing at the Tanegashima Space Center in Japan. Right: Schematic illustration showing the HTV’s major components. Image credits: courtesy JAXA.

The HTV formed part of a fleet of cargo vehicles that at the time included NASA’s space shuttle until its retirement in 2011, Roscosmos’ Progress, and the European Space Agency’s (ESA) Automated Transfer Vehicle that flew five missions between 2008 and 2015. The SpaceX Cargo Dragon and Orbital (later Northrup Grumman) Cygnus commercial cargo vehicles supplemented the fleet starting in 2012 and 2013, respectively. The HTV weighed 23,000 pounds empty and could carry up to 13,000 pounds of cargo, although on this first flight carried only 9,900 pounds. The vehicle included both a pressurized and an unpressurized logistics carrier. Following its rendezvous with the space station, it approached to within 33 feet, at which point astronauts grappled it with the station’s robotic arm and berthed it to the Harmony Node 2 module’s Earth facing port. Space station managers added two flights to the originally planned seven, with the last HTV flying in 2020. An upgraded HTV-X vehicle will soon make its debut to carry cargo to the space station, incorporating the lessons learned from the nine-mission HTV program.

Left: Technicians place HTV-1 inside its launch protective shroud at the Tanegashima Space Center. Middle left: Workers truck the HTV-1 to Vehicle Assembly Building (VAB). Middle right: The HTV-1 atop its H-II rolls out of the VAB on its way to the launch pad. Right: The HTV-1 mission patch. Image credits: courtesy JAXA.

Prelaunch processing of HTV-1 took place at the Tanegashima Space Center, where engineers inspected and assembled the spacecraft’s components. Workers installed the internal cargo into the pressurized logistics carrier and external payloads onto the External Pallet that they installed into the unpressurized logistics carrier. HTV-1 carried two external payloads, the Japanese Superconducting submillimeter-wave Limb Emission Sounder (SMILES) and the U.S. Hyperspectral Imager for Coastal Ocean (HICO)-Remote Atmospheric and Ionospheric detection System (RAIDS) Experiment Payload (HREP). On Aug. 23, 2009, workers encapsulated the assembled HTV into its payload shroud and a week later moved it into the Vehicle Assembly Building (VAB), where they mounted it atop the H-IIB rocket. Rollout from the VAB to the pad took place on the day of launch.

Liftoff of HTV-1 from the Tanegashima Space Center in Japan. Image credit: courtesy JAXA.

Left: The launch control center at the Tanegahsima Space Center in Japan. Middle: The mission control room at the Tsukuba Space Center in Japan. Image credits: courtesy JAXA. Right: The HTV-1 control team in the Mission Control Center at NASA’s Johnson Space Center in Houston.

On Sept. 10 – Sept. 11 Japan time – HTV-1 lifted off its pad at Tanegashima on the maiden flight of the H-IIB rocket. Controllers in Tanegashima’s launch control center monitored the flight until HTV-1 separated from the booster’s second stage. At that point, HTV-1 automatically activated its systems and established communications with NASA’s Tracking and Data Relay Satellite System. Control of the flight shifted to the mission control room at the Tsukuba Space Center outside Tokyo. Controllers in the Mission Control Center at NASA’s Johnson Space Center in Houston also monitored the mission’s progress.

Left: HTV-1 approaches the space station. Middle: NASA astronaut Nicole P. Stott grapples HTV-1 with the station’s robotic arm and prepares to berth it to the Node 2 module. Right: European Space Agency astronaut Frank DeWinne, left, Stott, and Canadian Space Agency astronaut Robert Thirsk in the Destiny module following the robotic operations to capture and berth HTV-1.

Following several days of systems checks, HTV-1 approached the space station on Sept. 17. Members of Expedition 20 monitored its approach, as it stopped within 33 feet of the orbiting laboratory. Using the space station’s Canadarm2 robotic arm, Expedition 20 Flight Engineer and NASA astronaut Nicole P. Stott grappled HTV-1. Fellow crew member Canadian Space Agency astronaut Robert Thirsk berthed the vehicle on the Harmony Node 2 module’s Earth-facing port. The following day, the Expedition 20 crew opened the hatch to HTV-1 to begin the cargo transfers.

Left: Canadian Space Agency astronaut Robert Thirsk inside HTV-1. Middle: NASA astronaut Nicole P. Stott transferring cargo from HTV-1 to the space station. Right: Stott in HTV-1 after completion of much of the cargo transfer.

Over the next several weeks, the Expedition 20 and 21 crews transferred more than 7,900 pounds of cargo from the pressurized logistics carrier to the space station. The items included food, science experiments, robotic arm and other hardware for the Kibo module, crew supplies including clothing, toiletries, and personal items, fluorescent lights, and other supplies. They then loaded the module with trash and unneeded equipment, altogether weighing 3,580 pounds.

Left: The space station’s robotic arm grapples the Exposed Pallet (EP) to transfer it to the Japanese Experiment Module-Exposed Facility (JEM-EF). Right: Canadian Space Agency astronaut Robert Thirsk and NASA astronaut Nicole P. Stott operate the station’s robotic arm to temporarily transfer the EP and its payloads to the JEM-EF.

Left: The Japanese robotic arm grapples one of the payloads from the Exposed Pallet (EP) to transfer it to the Japanese Experiment Module-Exposed Facility (JEM-EF). Right: European Space Agency astronaut Frank DeWinne, left, and NASA astronaut Nicole P. Stott operate the Japanese robotic arm from inside the JEM.

Working as a team, NASA astronauts Stott and Michael R. Barratt along with Thirsk and ESA astronaut Frank DeWinne performed the transfer of the external payloads. On Sept. 23, using the station’s robotic arm, they grappled the Exposed Pallet (EP) and removed it from HTV-1’s unpressurized logistics carrier, handing it off to the Japanese remote manipulator system arm that temporarily stowed it on the JEM’s Exposed Facility (JEM-EF). The next day, using the Japanese arm, DeWinne and Stott transferred the SMILES and HREP experiments to their designated locations on the JEM-EF. On Sept. 25, they grappled the now empty EP and placed it back into HTV-1’s unpressurized logistics carrier.

Left: Astronauts transfer the empty Exposed Pallet back to HTV-1. Middle: NASA astronaut Nicole P. Stott poses in front of the now-closed hatch to HTV-1. Right: European Space Agency astronaut Frank DeWinne, left, and Stott operate the station’s robotic arm to grapple HTV-1 for release.

Left: The space station’s robotic arm grapples HTV-1 in preparation for its unberthing. Middle: The station’s robotic arm has unberthed HTV-1 in preparation for its release. Right: The arm has released HTV-1 and it begins its separation from the space station.

Following completion of all the transfers, Expedition 21 astronauts aboard the space station closed the hatch to HTV-1 on Oct. 29. The next day, Stott and DeWinne grappled the vehicle and unberthed it from Node 2. While passing over the Pacific Ocean, they released HTV-1 and it began its departure maneuvers from the station. On Nov. 1, the flight control team in Tsukuba sent commands to HTV-1 to execute three deorbit burns. The vehicle reentered the Earth’s atmosphere, burning up off the coast of New Zealand, having completed the highly successful 52-day first HTV resupply mission. Eight more HTV missions followed, all successful, with HTV-9 completing its mission in August 2020.

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Ancient humans are said to have evolved to leave the trees, where our primate ancestors lived, in favour of open grassy savannahs – but we may have this idea wrong

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Sols 4300-4301: Rippled Pages NASA’s Mars rover Curiosity prepares for a thorough examination of the unusual, dark “Tungsten Hills” rocks in front of it, studying these rugged boulders covered in paper-thin sedimentary layers, some of which contain intriguing ripple structures that may have formed in running water or windblown sand. This image was taken by Left Navigation Camera aboard Curiosity on Sol 4298 — Martian day 4,298 of the Mars Science Laboratory mission — on Sept. 8, 2024, at 06:35:57 UTC.NASA/JPL-Caltech

Earth planning date: Monday, Sept. 9, 2024

With today’s plan, Curiosity completes its most southerly planned exploration of the Gediz Vallis channel. From here, our rover will head north and climb out of the channel to explore terrain to the west. Our planned drive to the “Tungsten Hills” rocks, named for a famous mining district near Bishop, California, completed successfully over the weekend, placing a pile of unusual dark rocks within our workspace. Curiosity is currently in the “Bishop” quadrangle on our map, so all targets in this area of Mount Sharp are named after places in the Sierra Nevada and Owens Valley of California. On sols 4300-4301, Curiosity will perform a thorough examination of these rugged boulders, which are covered in paper-thin sedimentary layers like the pages of a book (see image). Some layers have intriguing ripple structures that may have formed in running water or windblown sand. These features are the prime targets for contact science and remote observation at this location.

On Sol 4300, Curiosity will obtain ChemCam laser spectra and Mastcam imagery on a part of the closest plate-like rock called “Bonita Flat,” after a high valley above the southern Kern River canyon in Sequoia National Forest. ChemCam will also obtain telescopic views of a section of the Gediz Vallis channel banks with its RMI camera. Mastcam will take a mosaic of the upper reaches of the channel, then turn its cameras on the interesting bedrock of “Coffeepot Canyon,” honoring a ravine along the precipitous East Fork of the Kaweah River canyon in Sequoia National Park, unfortunately now engulfed in a huge wildfire.

The first science block ends with atmospheric observations, including a dust-devil movie, supra-horizon cloud imaging, and Mastcam measurement of dust in the air across the crater. Curiosity will then use its arm to brush the dust from the closest block in an area dubbed “Pond Lily Lake,” for a petite meadow lake atop the canyon wall of the San Joaquin River, downstream of Devil’s Postpile National Monument. This cleared spot will then be imaged by MAHLI and Mastcam, and its composition will be measured by APXS spectroscopy. MAHLI will perform an intricate “dog’s eye” maneuver to obtain detailed images of ripples in “Window Cliffs,” named after sheer walls above the spectacular fault-controlled Kern River canyon west of 14,505-foot Mount Whitney, the tallest peak in the lower 48 states. MAHLI wraps up a very full day of work by imaging the scalloped edge of the largest nearby block, dubbed “Boneyard Meadow” for a wetland in the western Sierra foothills where many sheep sadly perished due to a late spring snowstorm in 1877.

Early on sol 4301, Curiosity will use Mastcam to thoroughly document the Tungsten Hills in pre-sunrise morning light. Later in the day, a second science block starts with ChemCam spectroscopy and Mastcam imagery of “Castle Domes,” honoring the granite domes of Castle Valley, acclaimed as some of the most beautiful mountain scenery in Kings Canyon National Park. ChemCam RMI will perform telescopic observations of the channel floor. Mastcam will look for possible sulfur rocks at the base of the Tungsten Hills blocks in a target named “Hummingbird Lake,” for an alpine lake at 10,000 feet between Bloody and Lundy Canyons near Mono Lake. This science block of the plan ends with Navcam deck monitoring, dust measurement, and a large dust-devil survey. Curiosity will then drive north, taking a MARDI “sidewalk” video of the terrain under the rover during the drive.

Written by Deborah Padgett, OPGS Task Lead at NASA’s Jet Propulsion Laboratory

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Three amazing recent asteroid finds show what’s possible in terms of astronomy online.

Practical astronomy is increasingly becoming an online affair. In 2023, we wrote about this trend, and highlighted how Russian observer and amateur astronomer Filipp Romanov used time on a remote observatory to successfully discover two asteroids, which he named 623826 Alekseyvarkin and 623827 Nikandrilyich after his great-grandfathers. Now, Filipp has repeated this feat and pushed the limit of what’s possible online with the discovery of a trio of asteroids, including a rare near-Earth asteroid discovery found using a remote system.

Universe Today caught up with Filipp to explain how he did it:

“I have been searching for asteroids in images from remote telescopes from time to time for almost two years, and I have discovered four asteroids that have received their names, but on August 26th, 2024, I made a great find—I found a near-Earth asteroid in the images obtained using the 0.51-meter f/6.8 remote telescope T59 located at the Siding Spring Observatory of the iTelescope network, which is visible in all eight (300 second exposure) photos of one of the fields of the sky.”

A Surreptitious Find

Timing and planning is crucial in the hunt for asteroids, as Filipp elaborates: “I reserved in advance the necessary time on this telescope (when the waning gibbous Moon did not illuminate the sky above this observatory, and when the Moon was still below the horizon) for imaging, calculated the celestial coordinates, and requested specifically for the searching of main-belt asteroids and photography of two areas of the sky near the near the ecliptic and in the opposition region.”

The region is crucial, as asteroids coming into opposition ‘opposite’ to the Sun as seen from Earth are also at their brightest. Also, the area in the constellation Pisces where asteroids are reaching this point in late August into September is also relatively vacant, and far from the densely packed plane of the Milky Way Galaxy. In the era of visual astronomy in the mid-19th century, more asteroids were discovered in September than any other month.

It was in the same constellation than Filipp made a surprise discovery.

“I found an asteroid with a fast movement. In the images, this astronomical object looked like lines, unlike star-shaped (point source) main-belt asteroids, and I thought that it might be a near-Earth asteroid.” This fast motion leaving trails in the images is a clue that the object is also closer to the Earth.

Still, Filipp had to be sure that the asteroid wasn’t a known space rock. “I checked that there were no matches with known astronomical objects from the Minor Planet Center (MPC) database and sent the data of my astronomic measurements to the NEO Confirmation Page (NEOCP) so that they appear there for the attention of astronomers around the world.”

Pinning Down an Asteroid Find

This stage is crucial, in order to confirm the discovery and refine the position and orbit of the asteroid… and the more observations the better. Bad weather over key sites or losing the asteroid in the Sun’s glare can mean a discovery can go missing for months, or even years. “I immediately wrote to a number of astronomers with a request to confirm this astronomical object, but some of the astronomers did not have clear weather for observations (or were) not online at the time. Only one amateur astronomer immediately responded.” Filipp then made a quick decision to use precious observing time to make a follow up observation, using an iTelescope in Chile. “As a result, we both managed to confirm this asteroid and each of us sent results of our astrometric measurements to the MPC.”

Automatic sky surveys have since picked up asteroid 2024 QS, including the Mount Lemmon Survey on September 3rd, and the ATLAS-HKO and -MLO surveys in Hawaii on September 5th.

Asteroid 2024 QS, captured September 1st, days before closest approach to the Earth. Credit: Filipp Romanov.

The discovery became known as 2024 QS, a 43-meter asteroid on a 1.8 year orbit around the Sun, passing 12.1 LD (lunar distances, or slightly less than 4.7 million kilometers) from the Earth yesterday on September 9th at 00:39 Universal Time (UT). This pass ejected the asteroid from the near-Earth vicinity. About 35,000 Near-Earth Objects (NEOs) are known of though certainly, amateur astronomers finding one is rare.

…And Something More Asteroids 679996 (left) and 679999 (right). Credit: Filipp Romanov.

Two more recent discoveries were also made by Filipp:

The first was asteroid 2023 PS3, found on August 9th, 2023 using the the 2-meter Liverpool Telescope. This small (150-170 meter in diameter) asteroid is on a 2.56 year orbit. 2023 PS3 is a member of the Hungaria Group. Astronomers only know of about 30,000 Hungaria Group asteroids. This asteroid was later named 679996 Mariyafilippovna, after Filipp’s great-grandmother.

M.F. Romanova (left) and M.M. Varkina (right), the two great grandmothers of Filipp Romanov.

Mariya Filippovna Romanova (1919-1979) lived in Chugueka and worked as a secretary-typist and as a clerk. She was awarded the Veteran of Labour medal.

Next was asteroid 2023 SJ76, found on September 16th, 2023 using the T11 iTelescope located at the Utah Desert Remote Observatory located at Great Basin desert in Beryl Junction, Utah.

This main-belt asteroid is several hundred meters across, and has an orbital period of 3.57 years. It later received the name of 679999 Mariyavarkina after Filipp’s great-grandmother Mariya Maksimovna Varkina, who tragically died while pregnant in a bus accident in Primorsky Krai, Russia in 1962. She was Mordvin (by nationality), and from Sabanovo (near Penza, Russia).

Filipp Romanov at his laptop.

Congrats to Filipp on these amazing finds, and showing us all what’s possible, with a little dedication and persistence.

The post Amateur Astronomer Finds Additional Asteroids With Remote Telescopes appeared first on Universe Today.

When worker ants are exposed to a pathogenic fungus, they build nests that are more compartmentalised to reduce the risk of an epidemic

When worker ants are exposed to a pathogenic fungus, they build nests that are more compartmentalised to reduce the risk of an epidemic

On Sept. 9, 1994, space shuttle Discovery took to the skies on its 19th trip into space. During their 11-day mission, the STS-64 crew of Commander Richard “Dick” N. Richards, Pilot L. Blaine Hammond, and Mission Specialists Jerry M. Linenger, Susan J. Helms, Carl J. Meade, and Mark C. Lee demonstrated many of the space shuttle’s capabilities. They used a laser instrument to observe the Earth’s atmosphere, deployed and retrieved a science satellite, and used the shuttle’s robotic arm for a variety of tasks, including studying the orbiter itself. During a spacewalk, Lee and Meade tested a new device to rescue astronauts who found themselves detached from the vehicle. Astronauts today use the device routinely for spacewalks from the International Space Station.

Left: The STS-64 crew patch. Middle: Official photo of the STS-64 crew of L. Blaine Hammond, front row left, Richard “Dick” N. Richards, and Susan J. Helms; Mark C. Lee, back row left, Jerry M. Linenger, and Carl J. Meade. Right: The patch for the Lidar In-space Technology Experiment.

In November 1993, NASA announced the five-person all-veteran STS-64 crew. Richards, selected as an astronaut in 1980, had made three previous spaceflights, STS-28, STS-41, and STS-50. Lee, a member of the astronaut class of 1984, had two flights to his credit, STS-30 and STS-47, as did Meade, selected in 1985 and a veteran of STS-38 and STS-50. Each making their second trip into space, Hammond, selected in 1984 had flown on STS-39, and Helms, from the class of 1990 had flown on STS-54. In February 1994, NASA added first time space flyer Linenger to the crew, partly to make him eligible for a flight to Mir. He holds the distinction as the first member of his astronaut class of 1992 to fly in space.

Left: Workers tow Discovery from the Orbiter Processing Facility to the Vehicle Assembly Building at NASA’s Kennedy Space Center (KSC) in Florida. Middle: Space shuttle Discovery arrives at Launch Pad 39B, left, with space shuttle Endeavour still on Launch Pad 39A. Right: The STS-64 crew exits crew quarters at KSC on their way to the launch.

Discovery returned to NASA’s Kennedy Space Center (KSC) in Florida following its previous flight, the STS-60 mission, in February 1994. Workers in KSC’s Orbiter Processing Facility (OPF) removed the previous payload and began to service the orbiter. On May 26, workers moved Discovery into the Vehicle Assembly Building for temporary storage to make room in the OPF for Atlantis, just returned from Palmdale, California, where it underwent modifications to enable extended duration flights and dockings with space stations. Discovery returned to the OPF for payload installation in July, and rolled back to the VAB on Aug. 11 for mating with its external tank and solid rocket boosters. Discovery rolled out to Launch Pad 39B on Aug. 19, with its sister ship Endeavour still on Launch Pad 39A following the previous day’s launch abort. The six-person crew traveled to KSC to participate in the Terminal Countdown Demonstration Test, essentially a dress rehearsal for the launch countdown, on Aug. 24.

Liftoff of Discovery on the STS-64 mission.

On Sept. 9, 1994, after a more than two-hour delay caused by inclement weather, Discovery thundered into the sky to begin the STS-64 mission. Eight and a half minutes later, the orbiter and its crew reached space, and with a firing of the shuttle’s Orbiter Maneuvering System (OMS) engines they entered a 160-mile orbit inclined 57 degrees to the equator, ideal for Earth and atmospheric observations. The crew opened the payload bay doors, deploying the shuttle’s radiators, and removed their bulky launch and entry suits, stowing them for the remainder of the flight. They began to convert their vehicle into a science platform.

Left: LIDAR (light detection and ranging) In-space Technology Experiment (LITE) telescope in Discovery’s payload bay. Middle: Schematic of LITE data acquisition. Right: Image created from LITE data of clouds over southeast Asia.

One of the primary payloads on STS-64, the LIDAR (light detection and ranging) In-space Technology Experiment (LITE), mounted in Discovery’s forward payload bay, made the first use of a laser to study Earth’s atmosphere, cloud cover, and airborne dust from space. Lee, with help from Richards and Meade, activated LITE, built at NASA’s Langley Research Center in Hampton, Virginia, on the flight’s first day. The experiment operated for 53 hours during the mission, gathering 43 hours of high-rate data shared with 65 groups in 20 countries.

Left: View of the shuttle’s Remote Manipulator System, or robotic arm, holding the 33-foot long Shuttle Plume Impingement Flight Experiment (SPIFEX). Middle: Closeup view of SPIFEX. Right: A video camera view of Discovery from SPIFEX.

The Shuttle Plume Impingement Flight Experiment (SPIFEX), built at NASA’s Johnson Space Center (JSC) in Houston, consisted of a package of instruments positioned on the end of a 33-foot boom, to characterize the behavior of the shuttle’s Reaction Control System (RCS) thrusters. On the flight’s second day, Helms used the shuttle’s Remote Manipulator System (RMS), or robotic arm, to pick up SPIFEX. Over the course of the mission, she, Lee, and Hammond took turns operating the arm to obtain 100 test points during various thruster firings. A video camera on SPIFEX returned images of Discovery from several unusual angles.

Left: Astronaut Susan J. Helms lifts the Shuttle Pointed Autonomous Research Tool for Astronomy-201 (SPARTAN-201) out of Discovery’s payload bay prior to its release. Middle: Discovery approaches SPARTAN during the rendezvous. Right: Astronaut Susan J. Helms operating the Shuttle’s Remote Manipulator System prepares to grapple SPARTAN.

On the mission’s fifth day, Helms used the RMS to lift the Shuttle Pointed Autonomous Research Tool for Astronomy-201 (SPARTAN-201) satellite out of the payload bay and released it. Two and a half minutes later, SPARTAN activated itself, and Richards maneuvered Discovery away from the satellite so it could begin its science mission. On flight day seven, Discovery began its rendezvous with SPARTAN, and Hammond flew the shuttle close enough for Helms to grapple it with the arm and place it back in the payload bay. During its two-day free flight, SPARTAN’s two telescopes studied the acceleration and velocity of the solar wind and measured aspects of the Sun’s corona or outer atmosphere.

Left: Patch for the Simplified Aid for EVA (Extravehicular Activity) Rescue (SAFER). Middle: Astronauts Mark C. Lee, left, and Carl J. Meade during the 15-minute prebreathe prior to their spacewalk. Right: Lee, left, tests the SAFER while Meade works on other tasks in the payload bay.

On flight day seven, in preparation for the following day’s spacewalk, the astronauts lowered the pressure in the shuttle from 14.7 pounds per square inch (psi) to 10.2 psi to reduce the likelihood of the spacewalkers, Lee and Meade, from developing decompression sickness, also known as the bends. As an added measure, the two spent 15 minutes breathing pure oxygen before donning their spacesuits and exiting the shuttle’s airlock.

Left: Astronaut Mark C. Lee tests the Simplified Aid for EVA (Extravehicular Activity) Rescue (SAFER) during an untethered spacewalk. Middle: Astronaut Carl J. Meade tests the SAFER during an untethered spacewalk. Right: Meade, left, tests the ability of the SAFER to stop his spinning as Lee looks on.

The main tasks of the spacewalk involved testing the Simplified Aid for EVA (Extravehicular Activity) Rescue (SAFER), a device designed at JSC that attaches to the spacesuit’s Portable Life Support System backpack. The SAFER contains nitrogen jets that an astronaut can use, should he or she become untethered, to fly back to the vehicle, either the space shuttle or the space station. The two put the SAFER through a series of tests, including a familiarization, a system engineering evaluation, a crew rescue evaluation, and a precision flight evaluation. During the tests, Lee and Meade remained untethered from the shuttle, the first untethered spacewalk since STS-51A in November 1984. Lee and Meade successfully completed all the tests and gave the SAFER high marks. Astronauts conducting spacewalks from the space station use the SAFER as a standard safety device. Following the 6-hour 51-minute spacewalk, the astronauts raised the shuttle’s atmosphere back to 14.7 psi.

A selection of STS-64 crew Earth observation photographs. Left: Mt. St. Helens in Washington State. Middle left: Cleveland, Ohio. Middle right: Rabaul Volcano, Papua New Guinea. Right: Banks Peninsula, New Zealand.

Like on all space missions, the STS-64 astronauts spent their spare time looking out the window. They took numerous photographs of the Earth, their high inclination orbit allowing them views of parts of the planet not seen during typical shuttle missions.

Left: The Solid Surface Combustion Experiment middeck payload. Middle: Jerry M. Linenger gets in a workout while also evaluating the treadmill. Right: Inflight photograph of the STS-64 crew.

In addition to their primary tasks, the STS-64 crew also conducted a series of middeck experiments and tested hardware for future use on the space shuttle and space station.

Left: Commander Richard “Dick” Richards suited up for reentry. Middle: Pilot L. Blaine Hammond, left, and Mission Specialists Carl J. Meade and Susan J. Helms prepare for reentry. Right: Hammond fully suited for entry and landing.

Mission managers had extended the original flight duration by one day for additional data collection for the various payloads. On the planned reentry day, Sept. 19, bad weather at KSC forced the crew to spend an additional day in space. The next day, continuing inclement weather caused them to wave off the first two landing attempts at KSC and diverted to Edwards Air Force Base (AFB) in California.

Left: Richard Richards brings Discovery home at California’s Edwards Air Force Base. Middle: Workers at Edwards safe Discovery after its return from STS-64. Right: Discovery takes off from Edwards atop a Shuttle Carrier Aircraft for the ferry flight to NASA’s Kennedy Space Center in Florida.

On Sept. 20, they closed Discovery’s payload bay doors, donned their launch and entry suits, and strapped themselves into their seats for entry and landing. They fired Discover’s OMS engines to drop them out of orbit. Richards piloted Discovery to a smooth landing at Edwards, ending the 10-day 22-hour 50-minute flight. The crew had orbited the Earth 176 times. Workers at Edwards safed the vehicle and placed it atop a Shuttle Carrier Aircraft for the ferry flight back to KSC. The duo left Edwards on Sept. 26, and after an overnight stop at Kelly AFB in San Antonio, arrived at KSC the next day. Workers there began preparing Discovery for its next flight, the STS-63 Mir rendezvous mission, in February 1995.

Enjoy the crew narrate a video about the STS-64 mission. Read Richards’ recollections of the mission in his oral history with the JSC History Office.

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Almost a decade ago, then-grad student Kyle Helson contributed to early paperwork for NASA’s EXCITE mission. As a scientist at Goddard, Helson helped make this balloon-based telescope a reality: EXCITE launched successfully on Aug. 31.

Name: Kyle Helson
Title: Assistant Research Scientist
Organization: Observational Cosmology Lab (Code 665), via UMBC and the GESTAR II cooperative agreement with NASA Goddard

Dr. Kyle Helson is an assistant research scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md. Photo credit: Dr. Amy Bender

How did you know you wanted to work at NASA Goddard?

When I was finishing my physics Ph.D. at Brown University in 2016, I was talking to Ed Wollack and Dave Chuss at Goddard about the NASA postdoc program, and they suggested I apply. Luckily, I got the postdoc fellowship to come here to Goddard to work on cosmic microwave background detector testing and other related research.

I don’t think I would have realized or been interested in coming here had I not had that NASA Space Technology Research Fellowship when I was in grad school and gotten the opportunity to spend some time here and work with Ed and Dave.

What is the name of your team that you’re working with right now?

One of the projects I work on is the Exoplanet Climate Infrared TELescope (EXCITE). EXCITE is a scientific balloon-borne telescope that is designed to measure the spectra of hot, Jupiter-like exoplanet atmospheres in near-infrared light.

• Related: NASA’s EXCITE Mission Prepared for Scientific Balloon Flight

What is your role for that?

I do a little bit of everything. During grad school, I worked on the first few iterations of the proposal for EXCITE back in 2015 and 2016.

Over the past few years here at Goddard, I’ve been responsible for parts of a lot of the different subsystems like the cryogenic receiver, the gondola, the electronics, and integration and testing of the whole payload.

Last year, we went to Fort Sumner, New Mexico, for an engineering flight. Unfortunately, we were not able to fly for weather reasons. We went back last month, and I was again part of the field deployment team. We take the whole instrument, break it down, carefully ship it all out to New Mexico, put it back together, test it, and get it ready for a flight.

Kyle Helson (far right) and part of the EXCITE team stand in front of EXCITE Fort Sumner, New Mexico in Oct. 2023. EXCITE successfully launched on Aug. 31, 2024. Photo credit: Annalies Kleyheeg

What is most interesting to you about your role here at Goddard?

What I like about working on a project like EXCITE is that we get to kind of do a little bit of everything.

We’ve been able to see the experiment from concept and design to actually getting built, tested and hopefully flown and then subsequent data analysis after the flight. What I think is really fun is being able be with an experiment for the entire life cycle.

How do you help support Goddard’s mission?

We’re studying exoplanets, which definitely fits within the scientific mission of Goddard. We’re also a collaboration between Goddard other academic institutions, like Arizona State, like Brown University, Cornell, and several other places, and so we’re also members of the larger scientific research community beyond NASA.

We also have a number of graduate students working on EXCITE. Ballooning is a good platform for training students and young researchers to learn how to build and design instruments, do data analysis, etc. One of the missions of NASA and Goddard is to train early career scientists like graduate students and post docs, and balloons provide a good platform for that as well.

Balloon missions like EXCITE also provide a good platform for technology advancement and demonstration in preparation for future satellite missions.

How did you know cosmology was what you wanted to pursue?

When I was a kid, I loved space. I wanted to be an astronaut when I was a kid. I even went to space camp.

The first time I ever got to see physics was a middle-school science class. That was the first time we ever learned physics or astronomy that was deeper than just identifying planets or constellations. We started to learn how we could use math to measure or predict experiments.

When I was in college, I remember talking to my undergraduate academic adviser, Glenn Starkman, and talking about what research I might like to do over the summer between sophomore and junior year of college. I wasn’t really sure what I wanted to do or what I was interested in, and he suggested I talk to some of the professors doing astrophysics and cosmology research and see if they had space for me in their lab.

I ended up finding a great opportunity working in a research lab in college — so it was working in the physics department in Case Western.
That’s where I first started learning about computer-aided design (CAD), and designing things in CAD, and that’s where I first learned how things get made in a machine shop, like on a mill, or a lathe. These skills have come in handy ever since, because I do a lot of design work in the lab. And I was lucky growing up that my dad was really hands-on and liked to fix things and build things and he taught me a lot of those skills as well.

“When I was a kid, I loved space,” said Kyle Helson. “I wanted to be an astronaut when I was a kid. I even went to space camp.”Photo courtesy of Kyle Helson

Who has influenced you in your life?

My dad had a big influence. I think all the different people I’ve had the opportunity to learn from and work with who have been mentors along the way. My research advisers, professor John Ruhl in college, professor Greg Tucker in grad school, and Dr. Ed Wollack as a postdoc have all been very influential. Additionally, I have had the opportunity to work with a lot of very good post docs and research scientists during my career, Dr. Asad Aboobaker, Dr. Britt Reichborn-Kjennerud, Dr. Michele Limon, among others.

Throughout a career, there are tons of other people on the way from whom you pick up little things here and there that stick with you. You look back and you realize five years later you still do this one thing a certain way because someone helped you and taught you this skill or technique.

Where is a place you’d like to travel to?

Since I was lucky enough to go to Antarctica in graduate school, I figured that is the hardest continent to travel to, so now I have a mission to go to every continent. I’ve been to North America, I’ve been to South America, I’ve been to Asia, Europe, and Australia and New Zealand, but I’ve never been to Africa.

Kyle Helson (second from left) races the keirin at the Valley Preferred Cycling Center in Breinigsville, PA. Photo Credit Dr. Vishrut Garg

What are your hobbies, or what do you enjoy doing?

I’m a competitive track cyclist. I started racing bikes in collegiate racing as a grad student at Brown. Many summers I’ve spent many weekends driving and flying all over the U.S. to race in the biggest track cycling events in the country.

What would be your three-word-memoir?

Curious, compassionate, cat-dad.

By Tayler Gilmore
NASA’s Goddard Space Flight Center in 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.

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Details Last Updated Sep 10, 2024 EditorMadison OlsonContactRob Garnerrob.garner@nasa.govLocationGoddard Space Flight Center Related Terms

• People of Goddard
• Goddard Space Flight Center
• Scientific Balloons
• Wallops Flight Facility

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