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By NASA
Dr. Compton J. Tucker – a senior researcher at NASA’s Goddard Space Flight Center (GSFC) – joins 149 newly elected members to the National Academy of Sciences (NAS) – see Photo. NAS is one of the highest honors in American science. Compton gave a virtual presentation at GSFC on July 21, 2025, in which he showed highlights from his 50 years of research and reflected on the honor of being selected as an NAS fellow. He admitted that he was surprised upon learning of his election in April 2025 – despite his prestigious career.
Photo 1. Compton Tucker uses satellites to address global environmental challenges. Photo credit: Colorado State University In some ways this award brings Compton’s career full circle. He first came to GSFC as a NAS postdoc in 1975 after having earned his Bachelor’s of Science degree at Colorado State University (CSU) in 1969. He followed with his Master’s of Science degree and Ph.D. from CSU’s College of Forestry in 1973 and 1975 respectively. Two years later, he joined NASA as a civil servant. After a prestigious 48 years of public service, Compton has decided to retire in March 2025.
Compton is a well-known pioneer in the field of satellite-based environmental analysis, using data from various U.S. Geological Survey–NASA Landsat missions and from the National Oceanographic and Atmospheric Administration’s (NOAA) Advanced Very High Resolution Radiometer (AVHRR) instrument, the prototype of which launched aboard the Television Infrared Observation Satellite–N (TIROS-N) in 1978, with launches continuing on NOAA and European polar orbiting satellites throughout the next 40 years. The last two AVHRR instruments, which launched on the European Organisation for the Exploitation of Meteorological Satellites’ (EUMETSAT) Meteorological Operational satellites (METOP–B and -C) in 2012 and 2018 respectively, are still operational today.
Photo 2. Earth scientist Compton Tucker, who has studied remote sensing of vegetation at NASA Goddard for 50 years, has been elected to the National Academy of Sciences. Photo credit: Compton Tucker In his GSFC presentation, Compton described how, in the course of doing their research, he and his colleague(s) realized the original plans for AVHRR resulted in Channel 1 and 2 overlapping one another. In short, he explained that his input helped persuade NOAA management to change the design for Channel 1 of AVHRR – beginning with NOAA-7. It is fair to say that this change had a lasting impact, with 16 more AVHRR instruments (with slight modifications over time) launched over the next four decades.
Compton’s research has focused on global photosynthesis on land (e.g., grass-dominated savannas), determined land cover (i.e., forest fragmentation, deforestation, and forest condition), monitored droughts and food security, and evaluated ecologically coupled disease outbreaks. From 2005 to 2010, he was the co-chair of two Interagency Working Groups for Observations and Land Use and Land Cover Change. Compton was active in NASA’s Space Archaeology Program, participating in ground-based radar and magnetic surveys in Turkey, particularly at Troy, the Granicus River Valley, and Gordion. Over the course of his 50-year career, he has authored or co-authored more than 400 scholarly articles that have appeared in scientific journals – and in his presentation he hinted that more might be in store after retirement.
Compton has received numerous scientific awards and honors. He was elected to a fellow of the American Geophysical Union in 2009 and to the American Association for the Advancement of Science in 2015. He received the Senior Executive Service Presidential Rank Award for Meritorious Service (2017), the Vega Medal from the Swedish Society of Anthropology and Geography (2014), the Galathea Medal from the Royal Danish Geographical Society (2004), the William T. Pecora Award from the U.S. Geological Survey (1997), the Michael Collins Trophy for Current Achievement from the National Air and Space Museum (1993), the Henry Shaw Medal from the Missouri Botanical Garden (1992), and the Exceptional Scientific Achievement Medal from NASA (1987).
Compton enjoyed sharing his knowledge with the next generation of scientists. He served as an adjunct professor at the University of Maryland (1994–2024) and a consulting scholar at the University of Pennsylvania Museum of Archeology and Anthropology (2005–2024).
Congratulations to Compton on earning this prestigious – and well-earned – recognition from NAS. Best wishes to him in whatever is next on his journey.
The National Academy of Sciences is a private, nonprofit institution that was established under a congressional charter signed by President Abraham Lincoln in 1863. It recognizes achievement in science by election to membership, and – with the National Academy of Engineering and the National Academy of Medicine – provides science, engineering, and health policy advice to the federal government and other organizations.
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By Space Force
Members of multiple U.S. Air Force security forces units, 4th Space Operations Squadron and other military units stationed along Colorado’s Front Range participated in a military exercise at Piñon Canyon Maneuver Site last week.
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By NASA
NASA’s Worm logo is displayed in front of the agency’s headquarters in Washington.Credit: NASA Two NASA employees are being honored as part of the Samuel J. Heyman Service to America Medals, also known as the Sammies, recognizing outstanding federal employees who are addressing many of our country’s greatest challenges.
Rich Burns of NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and John Blevins of Marshall Space Flight Center in Huntsville, Alabama, were selected out of 350 nominees and are among 23 individuals and teams honored for their achievements as federal employees. They will be recognized at a ceremony in Washington on Tuesday, June 17, that also will be live streamed on the Sammies website. The honorees will be commended via videos and presenter remarks and receive medals for their achievements.
Named after the founder of the Partnership for Public Service, the 2025 Service to America Medals awards celebrate federal employees who provided critical public services and made outstanding contributions to the health, safety, and national security of our country.
“Rich and John exemplify the spirit of exploration and service that defines NASA and our nation’s civil servants,” said acting NASA Administrator Janet Petro. “Their leadership, ingenuity, and dedication have not only advanced America’s space program but also inspired the next generation of innovators. We are proud to see their achievements recognized among the very best of federal service.”
Richard Burns, project manager for the Origins, Spectral Interpretation, Resource Identification, and Security – Regolith Explorer (OSIRIS-REx) at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and honoree of the 2025 Samuel J. Heyman Service to America MedalsCredit: NASA Burns was the project manager of the Origins, Spectral Interpretation, Resource Identification, and Security – Regolith Explorer (OSIRIS-REx) mission to collect a sample from an asteroid and oversaw operations from the developmental stage to the successful landing of the spacecraft’s Sample Return Capsule.
The mission launched on Sept. 18, 2016, and after a nearly four-year journey, the OSIRIS-REx spacecraft successfully collected a sample from the asteroid Bennu on Oct. 20, 2020, which returned to Earth on Sept. 24, 2023, providing scientists with 120 grams of pristine material to study, the largest amount ever collected from an asteroid. Working to solidify OSIRIS-REx as a success, Burns set up multiple partnerships and communicated frequently with scientists, large and small businesses, NASA centers, and others to ensure the mission’s vision was carried out though each phase.
During the mission, Burns had to handle unique challenges that required adapting to new situations. These included improving flight software to help the spacecraft avoid hazardous parts of Bennu’s rocky surface and working with NASA leaders to find a way to best protect the sample collected from Bennu after a large stone propped the collection canister open. Finally, when the sample was set to return to Earth, Burns worked extensively with NASA and military partners to prepare for the landing, focusing on the safety of the public along with the integrity of the sample to ensure the final part of the mission was a success.
Burns helped OSIRIS-REx exceed its objectives all while under the original budget, allowing NASA to share a portion of the sample with more than 80 research projects and make new discoveries about the possible origins of life on our planet. The spacecraft, now known as Origins, Spectral Interpretation, Resource Identification and Security – Apophis Explorer, is scheduled to rendezvous with the asteroid Apophis in 2029.
“It’s humbling to accept an award based on the achievements of the amazingly talented, dedicated, and innovative OSIRIS-REx team,” Burns said. “I consider myself privileged to be counted among a team of true explorers who let no obstacle stand in the way of discovery.”
John Blevins, chief engineer for the SLS (Space Launch System) rocket at NASA’s Marshall Space Flight Center in Huntsville, Alabama, stands inside the Vehicle Assembly Building at Kennedy Space Center in Florida during the stacking of the Artemis I rocket ahead of its first test flight, which successfully launched from Kennedy on Nov. 16, 2022.Credit: NASA Blevins is the chief engineer for the Space Launch System (SLS) rocket and is responsible for the various technical decisions that need to be made to ensure each mission is successful. This included calculating structural needs, thermal analyses of the effects, and studies of vibrations, acoustics, propulsion integration, among other work.
Artemis I, the first test flight of the SLS rocket, successfully launched from NASA’s Kennedy Space Center in Florida on Nov. 16, 2022. In the time leading up to and during launch, Blevins led the team integrating the hardware for the mission working to address unexpected events while SLS was on the pad prior to launch. This included significant lightning storms and two hurricanes impacting Kennedy Space Center in Florida.
Blevins built a working coalition of engineering teams across the agency that previously did not exist. His ability to forge strong relationships on the various teams across the agency allowed for the successful launch of Artemis I. He continues to lead the engineering team behind SLS as they prepare for Artemis II, the second flight of SLS and the first crewed lunar mission of the 21st century.
“This is a reflection on the hard work and dedication of the entire Artemis Team,” Blevins said. “I am working with an incredibly competent, dedicated team agencywide that goes above and beyond to promote the space exploration goals of our nation. I am honored to accept the award on their behalf.”
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Last Updated Jun 16, 2025 EditorTiernan P. DoyleContactTiernan P. Doyletiernan.doyle@nasa.govLocationNASA Headquarters Related Terms
OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer) Common Exploration Systems Development Division Exploration Systems Development Mission Directorate Goddard Space Flight Center Marshall Space Flight Center OSIRIS-APEX (Origins, Spectral Interpretation, Resource Identification, and Security – Apophis Explorer) Space Launch System (SLS) View the full article
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By Space Force
U.S. Space Forces Europe – Space Forces Africa is advancing multinational collaboration and readiness by bringing cutting-edge space-based capabilities and electromagnetic warfare expertise to exercise African Lion 2025.
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By NASA
Dave Gallagher will become the director of NASA’s Jet Propulsion Laboratory in Southern California on Sunday, June 1. NASA/JPL-Caltech Laurie Leshin has decided to step down as director of NASA’s Jet Propulsion Laboratory on Sunday, June 1. David Gallagher, who has been serving as the Lab’s associate director for Strategic Integration, has been selected by Caltech to lead the federally funded research and development center. Caltech manages JPL for NASA.
A distinguished geochemist, Leshin was named by Caltech to lead the lab in early 2022. Her career has spanned academia and senior positions at NASA. Several NASA missions managed by JPL have launched under her leadership, including EMIT, SWOT, Psyche, PREFIRE, Europa Clipper, and SPHEREx, with the NASA-Indian Earth satellite NISAR set for a June launch. In addition, JPL has advanced the development of NASA’s asteroid-hunting NEO Surveyor mission as well as the trio of CADRE lunar rovers, and it delivered the Coronagraph Instrument, a technology demonstration with NASA’s forthcoming Roman Space Telescope.
“I am proud of the many things JPL has accomplished over the past three years,” said Leshin. “In addition to the long list of missions that have launched or moved toward launch during that time, we saved Voyager more than once and flew into history on Mars with Ingenuity. We have made more amazing scientific discoveries than I can name, including finding potential ancient Martian biomarkers with Perseverance. And we’ve driven the forefront of technology on Earth and in space. I know those achievements will continue under Dave’s capable leadership.”
Leshin, who has also served as Caltech vice president, is stepping down for personal reasons and will remain a Bren Professor of Geochemistry and Planetary Science at Caltech.
“While we respect Laurie’s decision to step away from her leadership position at JPL, we will miss her drive, compassion, and dedication,” Caltech President Thomas Rosenbaum said. “At the same time, we are grateful to Dave Gallagher for his devotion to JPL and his continuing leadership and partnership going forward. Dave’s experience working across multiple government and private sector entities will help secure ongoing support for America’s agenda in space, with JPL continuing to play an essential role.”
Gallagher will draw on his deep experience at JPL to lead the lab into the future. He arrived at JPL 36 years ago, in 1989, and went on to hold numerous leadership positions. Along with having served as the director and deputy director for Astronomy, Physics, and Space Technology, he was manager of JPL’s Advanced Optical Systems Program Office. An electrical engineer, Gallagher also managed the Spitzer Space Telescope and, among other roles, led the team that built and tested the Wide Field/Planetary Camera 2 (WF/PC-2) — a critical instrument that corrected the spherical aberration on NASA’s Hubble Space Telescope.
“Laurie has made a significant impact on energizing and focusing the lab, guiding it back on track after the Covid-19 pandemic. I wish her great success in this next chapter of her career, and I look forward to a very smooth transition at the lab,” said Gallagher. “We have exciting opportunities ahead helping to advance our nation’s space agenda and a fantastic team to help realize them.”
Founded by Caltech faculty and students in 1936, JPL has been managed by Caltech on behalf of NASA since 1958.
News Media Contacts
Matthew Segal / Veronica McGregor
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-8307 / 818-354-9452
matthew.j.segal@jpl.nasa.gov / veronica.c.mcgregor@jpl.nasa.gov
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