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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Jeff Renshaw is the lead attorney for procurement law in the Office of the General Counsel for NASA’s Stennis Space Center and the NASA Shared Services Center. NASA/Danny Nowlin NASA attorney Jeff Renshaw’s work has primarily revolved around two things: serving others and solving problems.
The New Orleans native retired as an U.S. Air Force judge advocate following more than two decades of service. Renshaw now has worked for more than eight years as an attorney advisor at NASA’s Stennis Space Center near Bay St. Louis, Mississippi.
As the nation’s largest multiuser propulsion test site, NASA Stennis supports and helps power both national and commercial space efforts and missions. Any activity at NASA Stennis is authorized by some form of written agreement. The Office of General Counsel, which Renshaw is a part of, works to ensure that work is conducted appropriately.
“I’m dedicated to being the best public civil servant I can be,” Renshaw said. “In this position, you are representing your client, which is NASA, the federal government, and the taxpayers, so it is important for me to stay updated with the latest legal developments to be the best advocate and advisor I can be.”
As lead attorney for procurement law, the Metairie, Louisiana, resident works alongside the Office of Procurement serving both NASA Stennis and the NASA Shared Services Center.
Some of Renshaw’s work includes reviewing Space Act contract agreements for commercial companies that use NASA Stennis facilities, along with activities for some of the more than 50 federal, state, academic, public, and private aerospace, technology, and research organizations that are part of the NASA Stennis federal city.
Renshaw is motivated to be an expert in his line of work – whether deployed as a U.S. Air Force procurement law attorney to Baghdad, the Horn of Africa, and Afghanistan, or working at NASA to help the nation return to the Moon. He spends a lot of time with NASA engineers to understand the in-and-outs of ongoing projects since any activity happening onsite involves the Office of General Counsel.
In addition to the U.S. Air Force, Renshaw has served in other legal profession roles, including as a law clerk for a Louisiana district court judge and a position in the Louisiana State Attorney General’s Office. He said working for NASA gives him the opportunity to focus on his area of expertise, while being involved in the agency’s great mission of exploration and discovery.
“I love NASA, and it is good to feel part of the team and to know that you are contributing to the mission,” he said.
Learn more about the people who work at NASA Stennis View the full article
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By NASA
Curiosity Navigation Curiosity Home Mission Overview Where is Curiosity? Mission Updates Science Overview Instruments Highlights Exploration Goals News and Features Multimedia Curiosity Raw Images Images Videos Audio Mosaics More Resources Mars Missions Mars Sample Return Mars Perseverance Rover Mars Curiosity Rover MAVEN Mars Reconnaissance Orbiter Mars Odyssey More Mars Missions The Solar System The Sun Mercury Venus Earth The Moon Mars Jupiter Saturn Uranus Neptune Pluto & Dwarf Planets Asteroids, Comets & Meteors The Kuiper Belt The Oort Cloud 3 min read
Sols 4382-4383: Team Work, Dream Work
NASA’s Mars rover Curiosity acquired this image using its Right Navigation Camera on sol 4373 — Martian day 4,373 of the Mars Science Laboratory mission — on Nov. 24, 2024, at 08:32:59 UTC. NASA/JPL-Caltech Earth planning date: Monday, Dec. 2, 2024
Today, after a weeklong holiday break, the team was eager to take a look at Curiosity’s new workspace. After driving 51 meters (about 167 feet) alongside Texoli butte (pictured) we had a whole host of new rocks to examine, and it was one of those curiously perfect planning days where everything falls into place. Our team of geologists here on Earth was busy studying the images our Martian geologist had downlinked to Earth prior to planning, and we scheduled 1.5 hours of science activities on the first sol of this plan. An interesting and varied workspace today saw lots of instruments working together to study the rocks in-depth — teamwork really does make the dream work.
To begin, we are targeting a vertical rock face called “Coronet Lake” near the rover. Coronet Lake has a cluster of nodules on show and we are getting information on the composition of these nodules with APXS and a ChemCam LIBS, as well as a close-up image with our MAHLI instrument. We also have a second MAHLI activity scheduled on a flat rock called “Excelsior Mountain.” Our observant team spotted an interesting-looking rock named “Admiration Point.” This rock may have fallen from the nearby Texoli butte, or could be a meteorite. To test these hypotheses further, we are targeting Admiration Point with a Mastcam mosaic and a ChemCam passive. ChemCam and Mastcam work together again on a target named “Olancha,” an area of rocks that could contain evidence of deformation from when the rocks first formed. Olancha will be targeted with a ChemCam long-distance RMI and a Mastcam mosaic.
Mastcam is finishing off the geological observations here with mosaics of “Angels Camp,” a rock containing veins where water may have once flowed, “Bare Island Lake,” a gray rock containing interesting polygonal ridges, and a trough feature close to Coronet Lake. ChemCam is taking another look back at Gediz Vallis channel to see a transition between light- and dark-toned rocks with a long-distance RMI, and we are rounding off this plan with our standard environmental observations.
As the Geology and Mineralogy theme group Keeper of the Plan for today’s planning, I made sure that this sol was packed full of science activities that the team wanted to schedule. After this busy first sol, Curiosity will be driving about 50 meters (about 164 feet), continuing to make our way out of Gediz Vallis, and we are all very excited to see what the rest of the sulfate-bearing unit has to offer us.
Written by Emma Harris, graduate student at Natural History Museum, London
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Last Updated Dec 03, 2024 Related Terms
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By NASA
Scientists find that cometary dust affects interpretation of spacecraft measurements, reopening the case for comets like 67P as potential sources of water for early Earth.
Researchers have found that water on Comet 67P/Churyumov–Gerasimenko has a similar molecular signature to the water in Earth’s oceans. Contradicting some recent results, this finding reopens the case that Jupiter-family comets like 67P could have helped deliver water to Earth.
Water was essential for life to form and flourish on Earth and it remains central for Earth life today. While some water likely existed in the gas and dust from which our planet materialized around 4.6 billion years ago, much of the water would have vaporized because Earth formed close to the Sun’s intense heat. How Earth ultimately became rich in liquid water has remained a source of debate for scientists.
Research has shown that some of Earth’s water originated through vapor vented from volcanoes; that vapor condensed and rained down on the oceans. But scientists have found evidence that a substantial portion of our oceans came from the ice and minerals on asteroids, and possibly comets, that crashed into Earth. A wave of comet and asteroid collisions with the solar system’s inner planets 4 billion years ago would have made this possible.
This image, taken by ESA’s Rosetta navigation camera, was taken from a about 53 miles from the center of Comet 67P/Churyumov-Gerasimenko on March 14, 2015. The image resolution is 24 feet per pixel and is cropped and processed to bring out the details of the comet’s activity. ESA/Rosetta/NAVCAM While the case connecting asteroid water to Earth’s is strong, the role of comets has puzzled scientists. Several measurements of Jupiter-family comets — which contain primitive material from the early solar system and are thought to have formed beyond the orbit of Saturn — showed a strong link between their water and Earth’s. This link was based on a key molecular signature scientists use to trace the origin of water across the solar system.
This signature is the ratio of deuterium (D) to regular hydrogen (H) in the water of any object, and it gives scientists clues about where that object formed. Deuterium is a rare, heavier type — or isotope — of hydrogen. When compared to Earth’s water, this hydrogen ratio in comets and asteroids can reveal whether there’s a connection.
Because water with deuterium is more likely to form in cold environments, there’s a higher concentration of the isotope on objects that formed far from the Sun, such as comets, than in objects that formed closer to the Sun, like asteroids.
Measurements within the last couple of decades of deuterium in the water vapor of several other Jupiter-family comets showed similar levels to Earth’s water.
“It was really starting to look like these comets played a major role in delivering water to Earth,” said Kathleen Mandt, planetary scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Mandt led the research, published in Science Advances on Nov. 13, that revises the abundance of deuterium in 67P.
About Kathleen Mandt
But in 2014, ESA’s (European Space Agency) Rosetta mission to 67P challenged the idea that Jupiter-family comets helped fill Earth’s water reservoir. Scientists who analyzed Rosetta’s water measurements found the highest concentration of deuterium of any comet, and about three times more deuterium than there is in Earth’s oceans, which have about 1 deuterium atom for every 6,420 hydrogen atoms.
“It was a big surprise and it made us rethink everything,” Mandt said.
Mandt’s team decided to use an advanced statistical-computation technique to automate the laborious process of isolating deuterium-rich water in more than 16,000 Rosetta measurements. Rosetta made these measurements in the “coma” of gas and dust surrounding 67P. Mandt’s team, which included Rosetta scientists, was the first to analyze all of the European mission’s water measurements spanning the entire mission.
The researchers wanted to understand what physical processes caused the variability in the hydrogen isotope ratios measured at comets. Lab studies and comet observations showed that cometary dust could affect the readings of the hydrogen ratio that scientists detect in comet vapor, which could change our understanding of where comet water comes from and how it compares to Earth’s water.
What are comets made of? It’s one of the questions ESA’s Rosetta mission to comet 67P/Churyumov-Gerasimenko wanted to answer. “So I was just curious if we could find evidence for that happening at 67P,” Mandt said. “And this is just one of those very rare cases where you propose a hypothesis and actually find it happening.”
Indeed, Mandt’s team found a clear connection between deuterium measurements in the coma of 67P and the amount of dust around the Rosetta spacecraft, showing that the measurements taken near the spacecraft in some parts of the coma may not be representative of the composition of a comet’s body.
As a comet moves in its orbit closer to the Sun, its surface warms up, causing gas to release from the surface, including dust with bits of water ice on it. Water with deuterium sticks to dust grains more readily than regular water does, research suggests. When the ice on these dust grains is released into the coma, this effect could make the comet appear to have more deuterium than it has.
Mandt and her team reported that by the time dust gets to the outer part of the coma, at least 75 miles from the comet body, it is dried out. With the deuterium-rich water gone, a spacecraft can accurately measure the amount of deuterium coming from the comet body.
This finding, the paper authors say, has big implications not only for understanding comets’ role in delivering Earth’s water, but also for understanding comet observations that provide insight into the formation of the early solar system.
“This means there is a great opportunity to revisit our past observations and prepare for future ones so we can better account for the dust effects,” Mandt said.
By Lonnie Shekhtman
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Dec 03, 2024 Editor Lonnie Shekhtman Contact Lonnie Shekhtman lonnie.shekhtman@nasa.gov Location Goddard Space Flight Center Related Terms
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By NASA
Associate Director for Mission Planning, Earth Sciences, and environmental scientist Robert J. “Bob” Swap makes a difference by putting knowledge into action.
Name: Robert J. “Bob” Swap
Title: Associate Director for Mission Planning, Earth Sciences
Organization: Earth Science Division (Code 610)
Robert Swap (right) and Karen St. Germain, NASA Earth science director (left) joined NASA’s Student Airborne Research Program, an eight-week summer internship program for rising senior undergraduates during summer 2023. Photo courtesy of Robert Swap What do you do and what is most interesting about your role here at Goddard?
I work with our personnel to come up with the most viable mission concepts and put together the best teams to work on these concepts. I love working across the division, and with the center and the broader community, to engage with diverse competent teams and realize their potential in address pressing challenges in the earth sciences.
Why did you become an Earth scientist?
In the mid to late ’70s, the environment became a growing concern. I read all the Golden Guides in the elementary school library to learn about different creatures. I grew up exploring and discovering the surrounding woods, fields, and creeks, both on my own and through scouting and became drawn to nature, its connectedness, and its complexity. The time I spent fishing with my father, a military officer who also worked with meteorology, and my brother helped cement that love. I guess you could say that I became “hooked.”
What is your educational background?
In 1987, I got a B.A. in environmental science from the University of Virginia. While at UVA, I was a walk-on football player, an offensive lineman on UVA’s first ever post-season bowl team. This furthered my understanding of teamwork, how to work with people who were much more skilled than I was, and how to coach. I received master’s and Ph.D. degrees in environmental science from UVA in 1990 and 1996, respectively.
As an undergraduate in environmental sciences, I learned about global biochemical cycling — meaning how carbon and nitrogen move through the living and nonliving systems — while working on research teams in the Chesapeake Bay, the Blue Ridge Mountains and the Amazon Basin.
Before graduating I had the good fortune to participate in the NASA Amazon Boundary Layer Experiment (ABLE-2B) in the central Amazon, which I used to kick off my graduate studies. I then focused on southern African aerosol emissions, transports and depositions for my doctoral studies that ultimately led to a university research fellow postdoc at the University of the Witwatersrand in Johannesburg, South Africa.
What are some of your career highlights?
It has been a crazy journey!
While helping put up meteorological towers in the Amazon deep jungle, we would encounter massive squall lines. These storms were so loud as they rained down on the deep forest that you could not hear someone 10 feet away. One of the neatest things that I observed was that after the storms passed, we would see a fine red dust settling on top of our fleet of white Volkswagen rental vehicles in the middle of the rainforest.
That observation piqued my interest and led to a paper I wrote about Saharan dust being transported to the Amazon basin and its potential implications for the Amazon, especially regarding nutrient losses from the system. Our initial work suggested there was not enough input from Northern Africa to support the system’s nutrient losses. That caused us to start looking to Sub-Saharan Africa as a potential source of these nutritive species.
I finished my master’s during the first Persian Gulf War, and finding a job was challenging. During that phase I diversified my income stream by delivering newspapers and pizzas and also bouncing at a local nightspot so that I could focus on writing papers and proposals related to my research. One of my successes was the winning of a joint National Science Foundation proposal that funded my doctoral research to go to Namibia and examine sources of aerosol and trace gases as part of the larger NASA TRACE-Southern African Atmosphere Fire Research Initiative – 92 (SAFARI-92). We were based at Okaukuejo Rest Camp inside of Namibia’s Etosha National Park for the better part of two months. We characterized conservative chemical tracers of aerosols, their sources and long-range transport from biomass burning regions, which proved, in part, that Central Southern Africa was providing mineral and biomass burning emissions containing biogeochemically important species to far removed, downwind ecosystems thousands of kilometers away.
When I returned to Africa as a postdoctoral fellow, I was able to experience other countries and cultures including Lesotho, Mozambique, and Zambia. In 1997, NASA’s AERONET project was also expanding into Africa and I helped Brent Holben and his team deploy instruments throughout Africa in preparation for vicarious validation of instrumentation aboard NASA’s Terra satellite platform.
I returned to UVA as a research scientist to work for Chris Justice and his EOS MODIS/Terra validation team. I used this field experience and the international networks I developed, which contributed to my assuming the role of U.S. principal investigator for NASA’s Southern African Regional Science Initiative. Known as SAFARI 2000, it was an effort that involved 250 scientists from 16 different countries and lasted more than three years. When it ended, I became a research professor and began teaching environmental science and mentoring UVA students on international engagement projects.
Around 2000, I created a regional knowledge network called Eastern/Southern Africa Virginia Network and Association (ESAVANA) that leveraged the formal and informal structures and networks that SAFARI 2000 established. I used my team building and science diplomacy skills to pull together different regional university partners, who each had unique pieces for unlocking the larger puzzle of how southern Africa acted as a regional coupled human-natural system. Each partner had something important to contribute while the larger potential was only possible by leveraging their respective strengths together as a team.
I traveled extensively during this time and was supported in 2001 partially by a Fulbright Senior Specialist Award which allowed me to spend time at the University of Eduardo Mondlane in Maputo Mozambique to help them with hydrology ecosystem issues in the wake of massive floods. We kept the network alive by creating summer study abroad, service learning and intersession January educational programs that drew upon colleagues and their expertise from around the world that attracted new people, energy, and resources to ESAVANA. All of these efforts contributed to a “community of practice” focused on learning about the ethics and protocols of international research. The respectful exchange of committed people and their energies and ideas was key to the effort’s success. I further amplified the impact of this work by contributing my lived and learned experiences to the development of the first ever global development studies major at UVA.
In 2004, I had a bad car accident and as a result have battled back and hip issues ever since. After falling off the research funding treadmill, I had to reconfigure myself in the teaching and program consultant sector. I grew more into a teaching role and was recognized for it by UVA’s Z-Society 2008 Professor of the Year, the Carnegie Foundation for the Advancement of Teaching’s Virginia’s 2012 Professor of the Year, as well as my 2014 induction into UVA’s Academy of Teaching — all while technically a research professor. I was also heavily involved for almost a decade with the American Association for the Advancement of Science and its Center for Science Diplomacy and tasks related to activities such as reviewing the Inter-American Institute for Global Change Research and teaching science diplomacy in short courses for the World Academy of Sciences for the Advancement of Science in Developing Countries located in Trieste, Italy, and the Academy of Science of South Africa.
I worked in the Earth Sciences Division at NASA Headquarters from 2014 to early 2017 as a rotating program support officer as part of the Intergovernmental Personnel Act (IPA), where I supported the atmospheric composition focus area. One of my responsibilities involved serving as a United States Embassy science fellow in the summer of 2015, where I went to Namibia to support one of our Earth Venture Suborbital field campaigns. I came to Goddard in April 2017 to help revector their nascent global network of ground-based, hyperspectral ultraviolet and visible instruments known as the Pandora.
What is your next big project?
I am currently working with the NASA Goddard Earth Science Division front office to craft a vision for the next 20 years, which involves the alignment of people around a process to achieve a desired product. With the field of Earth System Science changing so rapidly, we need to position ourselves within this ever evolving “new space” environment of multi-sectoral partners — governmental, commercial, not-for-profit, and academic — from the U.S. and beyond to study the Earth system. This involves working with other governmental agencies, universities and industrial partners to chart a way forward. We will have a lot of new players. We will be working with partners we never imagined.
We need people who know how to work across these different sectors. One such attempt to “grow our own timber” involves my development of an experimental version of the first NASA Student Airborne Research Program East Coast Edition (SARP and SARP-East), where student participants from a diversity of institutions of higher learning can see the power and promise of what NASA does, how we work together on big projects, and hopefully be inspired to take on the challenges of the future. In other words, I am pushing an exposure to field-based, Earth system science down earlier into their careers to expose them to what NASA does in an integrated fashion.
What assets do you bring to the Earth Science Division front office?
In 2020, I came to the Earth science front office to help lead the division. I make myself available across the division to help inspire, collect, suggest, and coach our rank and file into producing really cool mission concept ideas.
Part of why the front office wanted me is because I use the skills of relationship building, community building, and science diplomacy to make things happen, to create joint ventures. Having had to support myself for over 20 years on soft money, I learned to become an entrepreneur of sorts — to be scientifically and socially creative — and I was forced to look inward and take an asset-based approach. I look at all the forms of capital I have at hand and use those to make the best of what I have got. In Appalachia, there is an expression: use everything but the squeal from the pig.
Lastly, I bring a quick wit with a good dose of self-deprecating humor that helps me connect with people.
How do you use science diplomacy to make things happen?
Two of the things that bind people together about science are the process of inquiry and utilizing the scientific method, both of which are universally accepted. As such, they allow us to transcend national and cultural divides.
Science diplomacy works best when you start with this common foundation. Starting with this premise in collaborative science allows for conversations to take place focusing on what everyone has in common. You can have difficult conversations and respectful confrontations about larger issues.
Scientists can then talk and build bridges in unique ways. We did this with SAFARI 2000 while working in a region that had seen two major wars and the system of Apartheid within the previous decade. We worked across borders of people who were previously at odds. We did that by looking at something apart from national identity, which was Southern Africa. We focused on how a large-scale system functions and how to make something that incorporates 10 different countries operate as a unit. We wanted to conduct studies showing how the region operated as a functional unit while dealing with transboundary issues. It took a lot of community and trust, and we began with the science community.
What drives you?
I want to put knowledge into action to make a difference. I realize it is not about me, it is about “we.” That is why I came to NASA, to make a difference. There is no other agency in the world where we can harness such a unique and capable group of people.
What do you do for fun?
I enjoy watching sports. I still enjoy hiking, fishing, and tubing down the river. My wife and I like long walks through natural settings with our rescues, Lady, our black-and-tan coonhound, and Duchess, our long-haired German Shepherd Dog. They are our living hot water bottles in the winter.
My wife and I also like to cook together.
Who would you like to thank?
Without a doubt, it starts with my wife, family, and children whom without none of what I have accomplished would have been possible. I have had the good fortune to be able to bring them along on some of my international work, including to Africa.
I am also very grateful to all those people during my school years who stepped in and who did not judge me initially by my less than stellar grades. They gave me the chance to become who I am today.
Who inspires you?
There is an old television show that I really liked called “Connections,” by James Burke. He would start with a topic, go through the history, and show how one action led to another action with unforeseen consequences. He would take something modern like plastics and link it back to Viking times. Extending that affinity for connections, the Resilience Alliance out of Sweden also influences me with their commitment to showing connections and cycles.
My mentors at UVA were always open to serving as a sounding board. They treated me as a colleague, not a student, as a member of the guild even though I was still an apprentice. That left an indelible impression upon me and I always try to do the same. My doctoral mentor Mike Garstang said that he already had a job and that this job was to let me stand on his shoulders to allow me to get to the next level, which is my model.
Another person who was very formative during my early professional career was Jerry Melillo who showed me what it was like to be an effective programmatic mentor. I worked with him as his chief staffer of an external review of the IAI and learned a lot by watching how he ran that activity program.
With respect to NASA, a number of people come to mind: Michael King, Chris Justice, and Tim Suttles, as well as my South African Co-PI, Harold Annegarn, all of whom, at one time or another, took me under their respective wings and mentored me through the whole SAFARI 2000 process. From each of their different perspectives, they taught me how NASA works, how to engage, how to implement a program, and how to navigate office politics. And my sister and our conversations about leadership and what it means to be a servant leader. To be honest, there are scores more individuals who have contributed to my development that I don’t have the space to mention here.
What are some of your guiding principles?
Never lose the wonder — stay curious. “We” not “me.” Seeking to understand before being understood. We all stand on somebody’s shoulders. Humility rather than hubris. Respect. Be the change you wish to see.
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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Last Updated Nov 19, 2024 EditorMadison OlsonContactRob Garnerrob.garner@nasa.govLocationGoddard Space Flight Center Related Terms
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By NASA
NASA researchers Guan Yang, Jeff Chen, and their team received the 2024 Innovator of The Year Award at the agency’s Goddard Space Flight Center in Greenbelt, Maryland, for their exemplary work on a lidar system enhanced with artificial intelligence and other technologies.
Engineer Jeffrey Chen tests a lidar prototype on the roof of Building 33 at NASA’s Goddard Space Flight Center in Greenbelt, Md. Chen and his team earned the center’s 2024 Innovator of the Year award for their work on CASALS, a lidar system enhanced with artificial intelligence and other technologies.NASA Like a laser-based version of sonar, lidar and its use in space exploration is not new. But the lidar system Yang and Chen’s team have developed — formally the Concurrent Artificially-intelligent Spectrometry and Adaptive Lidar System (CASALS) — can produce higher resolution data within a smaller space, significantly increasing efficiency compared to current models.
The true revolution in CASALS is a unique combination of related technologies, such as highly efficient laser and receiver designs, wavelength-based, non-mechanical beam steering, multispectral imaging, and the incorporation of artificial intelligence to allow the instrument to make its own decisions while in orbit, instead of waiting for direction from human controllers on the ground.
“Existing 3D-imaging lidars struggle to provide the 2-inch resolution needed by guidance, navigation and control technologies to ensure precise and safe landings essential for future robotic and human exploration missions,” team engineer Jeffrey Chen said in an earlier interview. “Such a system requires 3D hazard-detection lidar and a navigation doppler lidar, and no existing system can perform both functions.”
The CASALS lidar is being developed to study land and ice topography, coastline changes, and other Earth science topics. Future applications in solar system science beyond our planet are already in the works, including space navigation improvements and high-resolution lunar mapping for NASA’s Artemis campaign to return astronauts to the Moon.
An effective and compact lidar system like CASALS could also map rocky planets like Venus or Mars.
NASA leveraged contributions from external Small Business Innovation Research companies such as Axsun Technologies, Freedom Photonics, and Left Hand for laser and optical technology to help make CASALS a reality.
The Internal Research and Development (IRAD) Innovator of The Year award is presented by Goddard’s Office of the Chief Technologist to a person or team within the program with a notable contribution to cutting-edge technology. The CASALS team was presented their award at a technology poster session on Nov. 6, 2024, at NASA Goddard.
By Avery Truman
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Last Updated Nov 15, 2024 EditorRob GarnerContactRob Garnerrob.garner@nasa.govLocationGoddard Space Flight Center Related Terms
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