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NASA's Top 5 Technical Challenges Countdown: #5: High-Powered Robotics
Space is hard. There's no doubt about that. It's completely unlike any environment we have ever faced on the Earth.
We Can Use Black Holes Particle Accelerators
The Large Hadron Collider has changed particle physics, and now scientists are dreaming up even bigger supercolliders. But humanity can't match the raw particle-colliding power of a supermassive black hole. In a new paper, researchers describe how supermassive black holes create a dense environment where particles are spinning at relativistic speeds and crashing into each other, releasing other particles that could be detectable on Earth.
Curiosity Rover Blog — Sols 4566-4567: Drilling Success
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Written by Michelle Minitti, Planetary Geologist at Framework
Earth planning date: Monday, June 9, 2025
The image above shows the drill poised on the surface of Mars at the start of our attempt to collect sample at “Altadena” over the weekend. Now we know, from subsequent imaging and telemetry, that the drill activity was successful, allowing planning today to focus on delivering sample powder to CheMin and SAM. CheMin and SAM will give us their distinct and valuable insights into the mineralogy (CheMin) and volatiles and organic compounds (SAM) within Altadena, which are key to our continued unravelling the history of Mt. Sharp. It is always exciting to find out what each of these instruments uncovers from Martian samples.
In addition to those sample deliveries, we had three other Altadena-focused activities. We acquired ChemCam RMI of the drill hole which helps ChemCam refine their laser targeting for future LIBS analyses of the drill hole. We planned a ChemCam passive spectroscopy observation of the cuttings around the drill hole for more insight into the mineralogy of the sample. We also included a single Mastcam M100 image of the drill hole which helps us track the wind activity at the drill site and thus the stability of the cuttings ahead of planned observations with APXS and MAHLI.
The weekend activities ran faster and more efficiently than modeled so that we had power to add additional science observations into the plan. We gathered more ChemCam data from the bedrock near Altadena at the target “Bolsa Chica,” and planned two ChemCam RMI long distance mosaics on sedimentary structures within “Texoli” butte and nearby boxwork structures. We kept track of the environment around us with yet more Mastcam imaging for wind-induced changes in the “Camp Williams” area, regular RAD and REMS measurements, two DAN measurements, and Navcam dust devil imaging and cloud movies.
Explore More 4 min read Sols 4561-4562: Prepping to Drill at AltadenaArticle
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Keep Exploring Discover More Topics From NASA
Mars
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Mars Exploration: Science Goals
The key to understanding the past, present or future potential for life on Mars can be found in NASA’s four…
Curiosity Rover Blog — Sols 4566-4567: Drilling Success
- Curiosity Home
- Science
- News and Features
- Multimedia
- Mars Missions
- Mars Home
Written by Michelle Minitti, Planetary Geologist at Framework
Earth planning date: Monday, June 9, 2025
The image above shows the drill poised on the surface of Mars at the start of our attempt to collect sample at “Altadena” over the weekend. Now we know, from subsequent imaging and telemetry, that the drill activity was successful, allowing planning today to focus on delivering sample powder to CheMin and SAM. CheMin and SAM will give us their distinct and valuable insights into the mineralogy (CheMin) and volatiles and organic compounds (SAM) within Altadena, which are key to our continued unravelling the history of Mt. Sharp. It is always exciting to find out what each of these instruments uncovers from Martian samples.
In addition to those sample deliveries, we had three other Altadena-focused activities. We acquired ChemCam RMI of the drill hole which helps ChemCam refine their laser targeting for future LIBS analyses of the drill hole. We planned a ChemCam passive spectroscopy observation of the cuttings around the drill hole for more insight into the mineralogy of the sample. We also included a single Mastcam M100 image of the drill hole which helps us track the wind activity at the drill site and thus the stability of the cuttings ahead of planned observations with APXS and MAHLI.
The weekend activities ran faster and more efficiently than modeled so that we had power to add additional science observations into the plan. We gathered more ChemCam data from the bedrock near Altadena at the target “Bolsa Chica,” and planned two ChemCam RMI long distance mosaics on sedimentary structures within “Texoli” butte and nearby boxwork structures. We kept track of the environment around us with yet more Mastcam imaging for wind-induced changes in the “Camp Williams” area, regular RAD and REMS measurements, two DAN measurements, and Navcam dust devil imaging and cloud movies.
Explore More 4 min read Sols 4561-4562: Prepping to Drill at AltadenaArticle
5 days ago
2 min read Searching for Ancient Rocks in the ‘Forlandet’ Flats
Article
5 days ago
3 min read Sols 4559-4560: Drill Campaign — Searching for a Boxwork Bedrock Drill Site
Article
7 days ago
Keep Exploring Discover More Topics From NASA
Mars
All Mars Resources
Explore this collection of Mars images, videos, resources, PDFs, and toolkits. Discover valuable content designed to inform, educate, and inspire,…
Rover Basics
Each robotic explorer sent to the Red Planet has its own unique capabilities driven by science. Many attributes of a…
Mars Exploration: Science Goals
The key to understanding the past, present or future potential for life on Mars can be found in NASA’s four…
Planned NIH Cuts Threaten Americans’ Health, Senators Charge in Tense Hearing
Senators grilled NIH director Jayanta Bhattacharya the day after more than 300 NIH staff members sent him a fiery letter protesting the cancellation of thousands of research projects
Laws of physics are still broken: Attempt to explain away black holes' central singularity falls short, scientist says
Disney and Universal lawsuit may be killing blow in AI copyright wars
Disney and Universal lawsuit may be killing blow in AI copyright wars
Welcome Home, Expedition 72 Crew!
On May 22, 2025, NASA hosted an Expedition 72 crew debrief and awards ceremony at Space Center Houston, where more than 1,000 attendees gathered to celebrate. The event recognized the achievements of the crew as well as NASA employees and partners whose dedication and support contributed to the expedition’s success. Crew members from Expedition 72 shared reflections and anecdotes from their time on the International Space Station and expressed gratitude for the opportunity to contribute to scientific research aboard the orbiting laboratory.
A group photo of participants from the Expedition 72 crew debrief and awards ceremony on May 22, 2025, at Space Center Houston’s IMAX theater. NASA/James Blair
The event included four NASA astronauts:
- Nick Hague, Crew-9 commander and Expedition 72 flight engineer
- Butch Wilmore, Boeing Starliner commander and Expedition 72 flight engineer
- Suni Williams, Boeing Starliner pilot and Expedition 72 commander
- Don Pettit, Soyuz MS-26 and Expedition 72 flight engineer
The Expedition 72 crew also included Roscosmos cosmonauts Aleksandr Gorbunov, Aleksey Ovchinin, and Ivan Vagner, who were not in attendance. The cosmonauts served as Crew-9 mission specialist, Soyuz-MS commander, and Soyuz-MS flight engineer, respectively.
NASA astronaut Matt Dominick kicked off the event by striking the ceremonial bell, a tradition symbolizing the end of the mission for the crew and those that support them.
Johnson Space Center Acting Director Stephen Koerner recognized the crew’s commitment to the mission and their role in the advancement of human spaceflight. “These brave men and women make the tough yet rewarding choice to embark on long-duration missions away from their family and friends,” he said. “They do this to conduct groundbreaking research and inspire generations. Spaceflight is hard, but through togetherness we make giant leaps, going further than ever before.”
NASA astronauts (from left) Don Pettit and Butch Wilmore, Expedition 72 flight engineers, pack external research hardware which housed a variety of samples exposed to the vacuum of space such as polymers, photovoltaic devices, and more. The samples were returned to Earth to be examined to understand how space radiation, the extreme thermal environment, micrometeoroids, and more affect materials possibly benefitting the space industry. NASA NASA astronauts Nick Hague and Suni Williams, Expedition 72 Flight Engineer and Commander respectively, discuss orbital lab maintenance procedures aboard the International Space Station.NASA
The Expedition 72 crew dedicated more than 1,000 combined hours to scientific research and technology demonstrations aboard the International Space Station. Their work included enhancing metal 3D printing capabilities in orbit, exploring the potential of stem cell technology for treating diseases, preparing the first wooden satellite for deployment, and collecting samples from the station’s exterior to examine whether microorganisms can survive in the harsh environment of space. They also conducted studies on plant growth and quality, investigated how fire behaves in microgravity, and advanced life support systems, all aimed at improving the health, safety, and sustainability of future space missions.
Pettit also used his spare time and surroundings aboard the station to conduct unique experiments and captivate the public with his photography. Expedition 72 captured a record 1 million photos during the mission, showcasing the unique research and views aboard the orbiting laboratory through astronauts’ eyes.
The expedition was a historic venture, with Williams and Wilmore launching aboard Boeing’s Starliner spacecraft as part of NASA’s Boeing Crew Flight Test before being integrated with the Expedition 71/72 crew and returning on NASA’s SpaceX Crew-9. While working aboard the orbiting laboratory, Williams established a new record for the most cumulative spacewalking time by a woman — 62 hours and 6 minutes — placing her fourth among the most experienced spacewalkers in history. Additionally, Expedition 72 saw the first reboost of the International Space Station by a Dragon spacecraft.
The crew participated in a panel discussion, sharing further details about the expedition including experiments conducted, favorite foods, and experiencing the Aurora Borealis. The conversation closed with a special patch presentation from Wilmore to Williams to highlight her achievement of exceeding Mach 25 in the Boeing Starliner spacecraft.
Following the panel, an award ceremony recognized team members for their efforts in supporting the mission, with recipients including the crew, NASA employees, and commercial partners.
The Expedition 72 crew poses for a portrait inside the International Space Station’s Harmony module with a cake commemorating a total of 3,000 cumulative days in space gained between the individual crew members. Front row (from left): Roscosmos cosmonaut Ivan Vagner, NASA astronaut Nick Hague, and Roscosmos cosmonaut Aleksandr Gorbunov. Back row (from left): NASA astronauts Butch Wilmore and Don Pettit, Roscosmos cosmonaut Alexey Ovchinin, and NASA astronaut Suni Williams.NASA
Flight Operations Directorate Acting Director Kjell Lindgren discussed the impact of collaboration with commercial and international partners. “Your collaboration is vital not just to mission success but to the very identity of this program,” he said. “Together, we can demonstrate what global collaboration can achieve in pursuit of excellence and exploration.”
Watch below to recap the Expedition 72 crew members’ journey aboard the International Space Station and to celebrate those who helped make the mission a success.
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States will continue to get FEMA federal disaster aid this year but may see less assistance after changes made in 2026
NASA+ Documentary “Cosmic Dawn” Reveals Untold Story of James Webb Space Telescope
What does it take to gaze through time to our universe’s very first stars and galaxies?
NASA answers this question in its new documentary, “Cosmic Dawn: The Untold Story of the James Webb Space Telescope.” The agency’s original documentary, which chronicles the story of the most powerful telescope ever deployed in space, was released Wednesday, June 11.
Cosmic Dawn offers an unprecedented glimpse into the delicate assembly, rigorous testing, and triumphant launch of NASA’s James Webb Space Telescope. The documentary showcases the complexity involved in creating a telescope capable of peering billions of years into the past.
Cosmic Dawn is now available for streaming on NASA’s YouTube, NASA+, and select local theaters. The trailer is available on NASA+ and YouTube.
Relive the pitfalls and the triumphs of the world’s most powerful space telescope—from developing the idea of an impossible machine to watching with bated breath as it unfolded, hurtling through space a million miles away from Earth. Watch the Documentary on YouTubeThe film features never-before-seen footage captured by the Webb film crew, offering intimate access to the challenges and triumphs faced by the team at NASA’s Goddard Space Flight Center in Greenbelt, Maryland — the birthplace of Webb.
“At NASA, we’re thrilled to share the untold story of our James Webb Space Telescope in our new film ‘Cosmic Dawn,’ celebrating not just the discoveries, but the extraordinary people who made it all happen, for the benefit of humanity,” said Rebecca Sirmons, head of NASA+ at the agency’s headquarters in Washington.
From its vantage point more than a million miles from Earth and a massive sunshield to block the light of our star, Webb’s First Deep Field the deepest and sharpest infrared images of the universe that the world had seen.
Webb’s images have dazzled people around the globe, capturing the very faint light of the first stars and galaxies that formed more than 13.5 billion years ago. These are baby pictures from an ancient past when the first objects were turning on and emitting light after the Big Bang. Webb has also given us new insights into black holes, planets both inside and outside of our own solar system, and many other cosmic phenomena.
Webb was a mission that was going to be spectacular whether that was good or bad — if it failed or was successful. It was always going to make historySophia roberts
NASA Video Producer
NASA’s biggest and most powerful space telescope was also its most technically complicated to build. It was harder still to deploy, with more than 300 critical components that had to deploy perfectly. The risks were high in this complicated dance of engineering, but the rewards were so much higher.
“Webb was a mission that was going to be spectacular whether that was good or bad — if it failed or was successful,” said video producer Sophia Roberts, who chronicled the five years preceding Webb’s launch. “It was always going to make history.”
NASA scientists like Nobel Laureate Dr. John Mather conceived Webb to look farther and deeper into origins of our universe using cutting edge infrared technology and massive mirrors to collect incredibly rich information about our universe, from the light of the first galaxies to detailed images of planets in our own solar system.
To achieve this goal, NASA and its partners faced unprecedented hurdles.
Webb’s development introduced questions that no one had asked before. How do you fit a telescope with the footprint of a tennis court into a rocket? How do you clean 18 sensitive mirrors when a single scratch could render them inoperable? How do you maintain critical testing while hurricane stormwater pours through ceilings?
A technician inspects the James Webb Space Telescope primary mirrors at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.NASA/Sophia Roberts
Cosmic Dawn captures 25 years of formidable design constraints, high-stake assessments, devastating natural disasters, a global pandemic and determined individuals who would let none of that get in the way of getting this monumental observatory to its rightful place in the cosmos.
“There was nothing easy about Webb at all,” said Webb project manager Bill Ochs. “I don’t care what aspect of the mission you looked at.”
Viewers will experience a one-of-a-kind journey as NASA and its partners tackle these dilemmas — and more — through ingenuity, teamwork, and unbreakable determination.
“The inspiration of trying to discover something — to build something that’s never been built before, to discover something that’s never been known before — it keeps us going,” Mather said. “We are pleased and privileged in our position here at NASA to be able to carry out this [purpose] on behalf of the country and the world.”
Bound by NASA’s 66-year commitment to document and share its work with the public, Cosmic Dawn details every step toward Webb’s launch and science results.
Learn more at nasa.gov/cosmicdawnBy Laine Havens,
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Media Contact:
Katie Konans,
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Animals Expend 76,000 Gigajoules of Energy Sculpting Our Planet Every Year
This tally of animals’ effect on Earth’s geology, equivalent to that of thousands of extreme floods, most likely is an underestimate
Portrait of a Bobcat
Portrait of a Bobcat
A NASA photographer captured this June 14, 2013, photo of a bobcat wading through a waterway near Launch Pad 38B at NASA’s Kennedy Space Center in Florida. Bobcats are just one of over 30 mammal species that call the Merritt Island National Wildlife Refuge home, along with hundreds of bird, fish, amphibian, and reptile species. The refuge, which shares space with NASA Kennedy, is also home to over 1,000 known plant species.
See more photos of mammals around NASA.
Image credit: NASA/Tony Gray
Portrait of a Bobcat
A NASA photographer captured this June 14, 2013, photo of a bobcat wading through a waterway near Launch Pad 38B at NASA’s Kennedy Space Center in Florida. Bobcats are just one of over 30 mammal species that call the Merritt Island National Wildlife Refuge home, along with hundreds of bird, fish, amphibian, and reptile species. The refuge, which shares space with NASA Kennedy, is also home to over 1,000 known plant species.
See more photos of mammals around NASA.
Image credit: NASA/Tony Gray
Lego Dune Atreides Royal Ornithopter review
NASA begins push to slash workforce with more staff buyouts, early retirements as budget cuts loom
The Earth Observer Editor’s Corner: April–June 2025
9 min read
The Earth Observer Editor’s Corner: April–June 2025NASA’s Earth science missions have continued to demonstrate remarkable adaptability and innovation, balancing the legacy of long-standing satellites with the momentum of cutting-edge new technologies. The Terra platform, the first of three Earth Observing System flagship missions, has been in orbit since December 1999. Over a quarter-century later, four of its five instruments continue to deliver valuable data, despite recent power challenges. As of this writing, Terra’s Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) – Visible–Near Infrared (VNIR) and Thermal Infrared (TIR) bands, Multi-angle Imaging SpectroRadiometer (MISR), Moderate Resolution Imaging Spectroradiometer (MODIS), and one of the two Clouds and the Earth’s Radiant Energy Systems (CERES) instruments onboard, are all still producing science data. For reasons explained below, only the Measurement of Pollution in the Troposphere (MOPITT) instrument has been shut down completely, after 25 years of successful operations. The longevity of the Terra instruments is credited to Terra’s instrument team members, who have skillfully adjusted operations to compensate for the reduction in power and extend Terra’s scientific contributions for as long as possible.
Terra has been experiencing power-based limitations caused by platform orbital changes and solar array impacts. On November 28, 2024, one of Terra’s power-transmitting shunt units failed. A response team reviewed Terra’s status, and discussed potential impacts and options. Consequently, the team changed the battery charge rate and reduced spacecraft power demands by placing the ASTER instrument into safe mode.
In order to maintain power margins, the Terra team also moved the MOPITT instrument from science mode into safe mode on February 4, 2025, ceasing data collection. On April 9, 2025, the Terra project determined that additional power was needed for the platform and MOPITT was moved from safe mode and fully turned off, ending the instrument’s carbon monoxide data record of near-global coverage every three days.
MOPITT was the Canadian Space Agency’s (CSA) contribution to the Earth Observing System. Launched as part of Terra’s payload in 1999, it became the longest-running air quality monitor in space, and the longest continuously operating Canadian space mission in history. MOPITT’s specific focus was on the distribution, transport, sources, and sinks of carbon monoxide (CO) in the troposphere – see Figure. The spectrometer’s marquee Earthdata products have included MOPITT Near Real-Time Datasets and offerings from the MOPITT Science Investigator-led Processing System (MOPITT SIPS). From tracking pollution from wildfires to providing data that informs international climate agreements, MOPITT served as a powerful tool for gathering data about pollution in the lowest portion of Earth’s atmosphere, informing research, policies, and even helping to advance forecasting models used by scientists worldwide. Congratulations to the MOPITT team for more than 25 years of groundbreaking science and international collaboration!
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As chance would have it, the MOPITT Team had planned a 25th anniversary celebration in April, 10–11, 2025, at CSA headquarters in Longueuil, Quebec and online – which began one day after the instrument was shut down. The celebration was a fitting closeout to the MOPITT mission and a celebration of its accomplishments. Over the two days, more than 45 speakers shared memories and presented findings from MOPITT’s quarter-century record of atmospheric carbon monoxide monitoring. Its data showed a global decline in carbon monoxide emissions over two decades and could also track the atmospheric transport of the gas from fires and industry from individual regions. MOPITT is a testament to remarkable international collaboration and achievement. As it is officially decommissioned, its data record will continue to drive research for years to come.
The Director General of the Canadian Space Agency—a key MOPITT partner—delivered remarks, and both Ken Jucks [NASA HQ— Program Manager for the Upper Atmosphere Research Program (UARP)] and Helen Worden [National Center for Atmospheric Research— MOPITT U.S. Principal Investigator] attended representing the U.S.
More information is available in a recently-released Terra blog post and on the Canadian Space Agency MOPITT website.
After continued investigation and monitoring of platform battery status, the Terra Flight Operations Team (FOT) determined there was sufficient power to resume imaging with ASTER’s VNIR bands, and as a result, ASTER once again began collecting VNIR data on January 17, 2025. Subsequently, ASTER resumed acquisitions for the TIR bands on April 15, 2025. (The ASTER Shortwave Infrared (SWIR) bands have been shut down since 2008).
As one long-serving mission sunsets its operations, new missions are stepping in to carry forward the legacy of Earth system science with fresh capabilities and approaches. Launched on May 25, 2023, the NASA Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission provides a groundbreaking approach to studying tropical cyclones using a passive microwave sounder CubeSat constellation. TROPICS uses multiple small satellites flying in a carefully engineered formation to measure precipitation structure as well as temperature and humidity profiles both within and outside of storms.
Unlike traditional polar-orbiting satellites, TROPICS’ low-inclination orbits allow for hourly revisits over tropical regions, enabling scientists to better monitor storm structure, intensity changes, and key processes like upper-level warm core formation and convective bursts.
The mission has already significantly contributed to operational forecasting and scientific research. With over 10 billion observations to date, TROPICS data have been used to validate storm models, support early-warning systems, and improve forecasts for events like Hurricane Franklin and Typhoon Kong-rey. Collaborations with agencies like the National Hurricane Center and the Joint Typhoon Warning Center have shown the value of TROPICS channels, particularly the 204.8 GHz channel, in identifying storm structure and intensity. The data are publicly available through the Goddard Earth Sciences Data and Information Services Center (GES DISC), and TROPICS continues to set the stage for the next generation of rapid-revisit Earth observation missions. To read more about the last two years of successful science operations with TROPICS, see NASA’s TROPICS Mission: Offering Detailed Images and Analysis of Tropical Cyclones.
While some missions focus on monitoring atmospheric processes, others are expanding the frontiers of Earth observation in entirely different domains—ranging from seafloor mapping to land surface monitoring and beyond. NASA’s Ice, Clouds, and land Elevation Satellite–2 (ICESat-2) mission continues to provide critical data on Earth’s changing ice sheets, glaciers, and other environmental features. In March 2025, the satellite achieved a significant milestone by firing its two trillionth laser pulse, measuring clouds off the coast of East Antarctica. Despite challenges, such as a solar storm in May 2024 that temporarily disrupted operations, the mission has resumed full functionality, providing high-resolution data that has enabled scientists to map over 16 years of ice sheet changes. The mission’s advanced laser altimeter system, ATLAS, continues to deliver unprecedented detail in monitoring Earth’s changing ice sheets, glaciers, forests, and ocean floor.
The ICESat-2 Satellite-Derived Bathymetry (SDB) workshop, held on March 17, 2025, in conjunction with the US-Hydro meeting, brought together experts and stakeholders from government, academia, and industry to explore the current capabilities and future potential of satellite-based seafloor mapping. With over 2000 journal articles referencing ICESat-2 in the context of bathymetry, the workshop underscored the growing importance of this technology in coastal management, navigation, habitat monitoring, and disaster response. For more details, see the ICESat-2 Applications Team Hosts Satellite Bathymetry Workshop report.
As satellite technologies continue to evolve, so do the scientific communities that rely on them, bringing researchers together to share insights, refine data products, and explore new applications across a range of Earth and atmospheric science disciplines. As of early 2025, NASA’s Stratospheric Aerosol and Gas Experiment III (SAGE III) aboard the International Space Station (ISS) continues to provide critical insights into Earth’s atmospheric composition. In addition to scientific advancements, SAGE III/ISS has enhanced public accessibility to its data. In February 2025, the mission launched updates to its Quicklook and Expedited data portal, introducing a new ‘Highlights’ tab to showcase major stratospheric events and a ‘Comparisons’ tab for validating measurements with ground-based stations. These enhancements aim to make SAGE III/ISS data more accessible and increase its utilization for atmospheric research.
The most recent SAGE III/ISS Science Team Meeting took place in October 2024 at NASA Langley Research Center and was held in hybrid format. Around 50 scientists gathered to discuss recent advancements, mission updates, and future directions in upper troposphere–stratosphere (UTS) research. The SAGE III/ISS team celebrated eight years of continuous data collection aboard the ISS and presented Version 6.0 of SAGE III/ISS data products during the meeting, which addresses previous data biases and enhances aerosol profile recovery. Presentations also covered aerosol and cloud studies, lunar-based aerosol retrievals, and collaborative projects using data from multiple satellite platforms and instruments. To learn more, see the full Summary of the 2024 SAGE III/ISS Meeting.
Moving on to personnel announcements, I wish to extend my condolences to the friends and family of Dr. Stanley Sander, who passed away in March 2025. Sander devoted over 50 years to atmospheric science at NASA’s Jet Propulsion Laboratory, making groundbreaking contributions to stratospheric ozone research, air pollution, and climate science. His precise laboratory work on reaction kinetics and spectroscopy became foundational for atmospheric modeling and environmental policy, including the Montreal Protocol. Sander also played a key role in satellite calibration, mentored dozens of young scientists, and held several leadership positions at JPL. Remembered for his brilliance, humility, and kindness, his legacy endures through both his scientific achievements and the many lives he influenced. See In Memoriam: Dr. Stanley Sander.
On a happier, though bittersweet, note, my congratulations to Jack Kaye [NASA HQ—Associate Director for Research, Earth Science Division (ESD)] who retired from NASA on April 30, 2025, after 42 years of distinguished service. With a background in chemistry and atmospheric science, he played a leading role in NASA’s efforts to understand Earth’s atmosphere and climate using satellite data and modeling. Throughout his career, Kaye has held various key leadership positions, managed major missions, e.g., the series of Shuttle-based Atmospheric Laboratory of Applications and Science (ATLAS) experiments, and supported the development of early-career scientists. He also represented NASA in national and international science collaborations and advisory roles. Kaye received numerous awards, published extensively, and was widely recognized for his contributions to Earth science and global climate research. I extend my sincere thanks to Jack for his many years of vital leadership and lasting contributions to the global Earth science community!
Barry Lefer [NASA HQ—Tropospheric Composition Program Manager] has taken over as Acting Associate Director for Research in ESD. Reflecting on Kaye’s impact, Lefer said, “Jack has been a wonderful friend and mentor. The one thing about Jack that has had the biggest impact on me (besides his incredible memory) is his kindness. He has an enormous heart. He will be missed, but his impact on Earth Science will endure for a very long time!” See the full announcement, Jack Kaye Retires After a Storied Career at NASA.
Steve Platnick
EOS Senior Project Scientist
The Earth Observer Editor’s Corner: April–June 2025
9 min read
The Earth Observer Editor’s Corner: April–June 2025NASA’s Earth science missions have continued to demonstrate remarkable adaptability and innovation, balancing the legacy of long-standing satellites with the momentum of cutting-edge new technologies. The Terra platform, the first of three Earth Observing System flagship missions, has been in orbit since December 1999. Over a quarter-century later, four of its five instruments continue to deliver valuable data, despite recent power challenges. As of this writing, Terra’s Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) – Visible–Near Infrared (VNIR) and Thermal Infrared (TIR) bands, Multi-angle Imaging SpectroRadiometer (MISR), Moderate Resolution Imaging Spectroradiometer (MODIS), and one of the two Clouds and the Earth’s Radiant Energy Systems (CERES) instruments onboard, are all still producing science data. For reasons explained below, only the Measurement of Pollution in the Troposphere (MOPITT) instrument has been shut down completely, after 25 years of successful operations. The longevity of the Terra instruments is credited to Terra’s instrument team members, who have skillfully adjusted operations to compensate for the reduction in power and extend Terra’s scientific contributions for as long as possible.
Terra has been experiencing power-based limitations caused by platform orbital changes and solar array impacts. On November 28, 2024, one of Terra’s power-transmitting shunt units failed. A response team reviewed Terra’s status, and discussed potential impacts and options. Consequently, the team changed the battery charge rate and reduced spacecraft power demands by placing the ASTER instrument into safe mode.
In order to maintain power margins, the Terra team also moved the MOPITT instrument from science mode into safe mode on February 4, 2025, ceasing data collection. On April 9, 2025, the Terra project determined that additional power was needed for the platform and MOPITT was moved from safe mode and fully turned off, ending the instrument’s carbon monoxide data record of near-global coverage every three days.
MOPITT was the Canadian Space Agency’s (CSA) contribution to the Earth Observing System. Launched as part of Terra’s payload in 1999, it became the longest-running air quality monitor in space, and the longest continuously operating Canadian space mission in history. MOPITT’s specific focus was on the distribution, transport, sources, and sinks of carbon monoxide (CO) in the troposphere – see Figure. The spectrometer’s marquee Earthdata products have included MOPITT Near Real-Time Datasets and offerings from the MOPITT Science Investigator-led Processing System (MOPITT SIPS). From tracking pollution from wildfires to providing data that informs international climate agreements, MOPITT served as a powerful tool for gathering data about pollution in the lowest portion of Earth’s atmosphere, informing research, policies, and even helping to advance forecasting models used by scientists worldwide. Congratulations to the MOPITT team for more than 25 years of groundbreaking science and international collaboration!
To view this video please enable JavaScript, and consider upgrading to a web browser that
supports HTML5 video
As chance would have it, the MOPITT Team had planned a 25th anniversary celebration in April, 10–11, 2025, at CSA headquarters in Longueuil, Quebec and online – which began one day after the instrument was shut down. The celebration was a fitting closeout to the MOPITT mission and a celebration of its accomplishments. Over the two days, more than 45 speakers shared memories and presented findings from MOPITT’s quarter-century record of atmospheric carbon monoxide monitoring. Its data showed a global decline in carbon monoxide emissions over two decades and could also track the atmospheric transport of the gas from fires and industry from individual regions. MOPITT is a testament to remarkable international collaboration and achievement. As it is officially decommissioned, its data record will continue to drive research for years to come.
The Director General of the Canadian Space Agency—a key MOPITT partner—delivered remarks, and both Ken Jucks [NASA HQ— Program Manager for the Upper Atmosphere Research Program (UARP)] and Helen Worden [National Center for Atmospheric Research— MOPITT U.S. Principal Investigator] attended representing the U.S.
More information is available in a recently-released Terra blog post and on the Canadian Space Agency MOPITT website.
After continued investigation and monitoring of platform battery status, the Terra Flight Operations Team (FOT) determined there was sufficient power to resume imaging with ASTER’s VNIR bands, and as a result, ASTER once again began collecting VNIR data on January 17, 2025. Subsequently, ASTER resumed acquisitions for the TIR bands on April 15, 2025. (The ASTER Shortwave Infrared (SWIR) bands have been shut down since 2008).
As one long-serving mission sunsets its operations, new missions are stepping in to carry forward the legacy of Earth system science with fresh capabilities and approaches. Launched on May 25, 2023, the NASA Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission provides a groundbreaking approach to studying tropical cyclones using a passive microwave sounder CubeSat constellation. TROPICS uses multiple small satellites flying in a carefully engineered formation to measure precipitation structure as well as temperature and humidity profiles both within and outside of storms.
Unlike traditional polar-orbiting satellites, TROPICS’ low-inclination orbits allow for hourly revisits over tropical regions, enabling scientists to better monitor storm structure, intensity changes, and key processes like upper-level warm core formation and convective bursts.
The mission has already significantly contributed to operational forecasting and scientific research. With over 10 billion observations to date, TROPICS data have been used to validate storm models, support early-warning systems, and improve forecasts for events like Hurricane Franklin and Typhoon Kong-rey. Collaborations with agencies like the National Hurricane Center and the Joint Typhoon Warning Center have shown the value of TROPICS channels, particularly the 204.8 GHz channel, in identifying storm structure and intensity. The data are publicly available through the Goddard Earth Sciences Data and Information Services Center (GES DISC), and TROPICS continues to set the stage for the next generation of rapid-revisit Earth observation missions. To read more about the last two years of successful science operations with TROPICS, see NASA’s TROPICS Mission: Offering Detailed Images and Analysis of Tropical Cyclones.
While some missions focus on monitoring atmospheric processes, others are expanding the frontiers of Earth observation in entirely different domains—ranging from seafloor mapping to land surface monitoring and beyond. NASA’s Ice, Clouds, and land Elevation Satellite–2 (ICESat-2) mission continues to provide critical data on Earth’s changing ice sheets, glaciers, and other environmental features. In March 2025, the satellite achieved a significant milestone by firing its two trillionth laser pulse, measuring clouds off the coast of East Antarctica. Despite challenges, such as a solar storm in May 2024 that temporarily disrupted operations, the mission has resumed full functionality, providing high-resolution data that has enabled scientists to map over 16 years of ice sheet changes. The mission’s advanced laser altimeter system, ATLAS, continues to deliver unprecedented detail in monitoring Earth’s changing ice sheets, glaciers, forests, and ocean floor.
The ICESat-2 Satellite-Derived Bathymetry (SDB) workshop, held on March 17, 2025, in conjunction with the US-Hydro meeting, brought together experts and stakeholders from government, academia, and industry to explore the current capabilities and future potential of satellite-based seafloor mapping. With over 2000 journal articles referencing ICESat-2 in the context of bathymetry, the workshop underscored the growing importance of this technology in coastal management, navigation, habitat monitoring, and disaster response. For more details, see the ICESat-2 Applications Team Hosts Satellite Bathymetry Workshop report.
As satellite technologies continue to evolve, so do the scientific communities that rely on them, bringing researchers together to share insights, refine data products, and explore new applications across a range of Earth and atmospheric science disciplines. As of early 2025, NASA’s Stratospheric Aerosol and Gas Experiment III (SAGE III) aboard the International Space Station (ISS) continues to provide critical insights into Earth’s atmospheric composition. In addition to scientific advancements, SAGE III/ISS has enhanced public accessibility to its data. In February 2025, the mission launched updates to its Quicklook and Expedited data portal, introducing a new ‘Highlights’ tab to showcase major stratospheric events and a ‘Comparisons’ tab for validating measurements with ground-based stations. These enhancements aim to make SAGE III/ISS data more accessible and increase its utilization for atmospheric research.
The most recent SAGE III/ISS Science Team Meeting took place in October 2024 at NASA Langley Research Center and was held in hybrid format. Around 50 scientists gathered to discuss recent advancements, mission updates, and future directions in upper troposphere–stratosphere (UTS) research. The SAGE III/ISS team celebrated eight years of continuous data collection aboard the ISS and presented Version 6.0 of SAGE III/ISS data products during the meeting, which addresses previous data biases and enhances aerosol profile recovery. Presentations also covered aerosol and cloud studies, lunar-based aerosol retrievals, and collaborative projects using data from multiple satellite platforms and instruments. To learn more, see the full Summary of the 2024 SAGE III/ISS Meeting.
Moving on to personnel announcements, I wish to extend my condolences to the friends and family of Dr. Stanley Sander, who passed away in March 2025. Sander devoted over 50 years to atmospheric science at NASA’s Jet Propulsion Laboratory, making groundbreaking contributions to stratospheric ozone research, air pollution, and climate science. His precise laboratory work on reaction kinetics and spectroscopy became foundational for atmospheric modeling and environmental policy, including the Montreal Protocol. Sander also played a key role in satellite calibration, mentored dozens of young scientists, and held several leadership positions at JPL. Remembered for his brilliance, humility, and kindness, his legacy endures through both his scientific achievements and the many lives he influenced. See In Memoriam: Dr. Stanley Sander.
On a happier, though bittersweet, note, my congratulations to Jack Kaye [NASA HQ—Associate Director for Research, Earth Science Division (ESD)] who retired from NASA on April 30, 2025, after 42 years of distinguished service. With a background in chemistry and atmospheric science, he played a leading role in NASA’s efforts to understand Earth’s atmosphere and climate using satellite data and modeling. Throughout his career, Kaye has held various key leadership positions, managed major missions, e.g., the series of Shuttle-based Atmospheric Laboratory of Applications and Science (ATLAS) experiments, and supported the development of early-career scientists. He also represented NASA in national and international science collaborations and advisory roles. Kaye received numerous awards, published extensively, and was widely recognized for his contributions to Earth science and global climate research. I extend my sincere thanks to Jack for his many years of vital leadership and lasting contributions to the global Earth science community!
Barry Lefer [NASA HQ—Tropospheric Composition Program Manager] has taken over as Acting Associate Director for Research in ESD. Reflecting on Kaye’s impact, Lefer said, “Jack has been a wonderful friend and mentor. The one thing about Jack that has had the biggest impact on me (besides his incredible memory) is his kindness. He has an enormous heart. He will be missed, but his impact on Earth Science will endure for a very long time!” See the full announcement, Jack Kaye Retires After a Storied Career at NASA.
Steve Platnick
EOS Senior Project Scientist
NASA’s Webb ‘UNCOVERs’ Galaxy Population Driving Cosmic Renovation
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NASA/ESA/CSA/Bezanson et al. 2024 and Wold et al. 2025
Astronomers using data from NASA’s James Webb Space Telescope have identified dozens of small galaxies that played a starring role in a cosmic makeover that transformed the early universe into the one we know today.
“When it comes to producing ultraviolet light, these small galaxies punch well above their weight,” said Isak Wold, an assistant research scientist at Catholic University of America in Washington and NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “Our analysis of these tiny but mighty galaxies is 10 times more sensitive than previous studies, and shows they existed in sufficient numbers and packed enough ultraviolet power to drive this cosmic renovation.”
Wold discussed his findings Wednesday at the 246th meeting of the American Astronomical Society in Anchorage, Alaska. The study took advantage of existing imaging collected by Webb’s NIRCam (Near-Infrared Camera) instrument, as well as new observations made with its NIRSpec (Near-Infrared Spectrograph) instrument.
Image A: Webb search finds dozens of tiny, young star-forming galaxies Symbols mark the locations of young, low-mass galaxies bursting with new stars when the universe was about 800 million years old. Using a filter sensitive to such galaxies, NASA’s James Webb Space Telescope imaged them with the help of a natural gravitational lens created by the massive galaxy cluster Abell 2744. In all, 83 young galaxies were found, but only the 20 shown here (white diamonds) were selected for deeper study. The inset zooms into one of the galaxies.
Download high-resolution images from NASA’s Scientific Visualization Studio NASA/ESA/CSA/Bezanson et al. 2024 and Wold et al. 2025
The tiny galaxies were discovered by Wold and his Goddard colleagues, Sangeeta Malhotra and James Rhoads, by sifting through Webb images captured as part of the UNCOVER (Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization) observing program, led by Rachel Bezanson at the University of Pittsburgh in Pennsylvania.
The project mapped a giant galaxy cluster known as Abell 2744, nicknamed Pandora’s cluster, located about 4 billion light-years away in the southern constellation Sculptor. The cluster’s mass forms a gravitational lens that magnifies distant sources, adding to Webb’s already considerable reach.
Image B: Galaxy cluster helps reveal young, low-mass galaxies bursting with stars White diamonds show the locations of 20 of the 83 young, low-mass, starburst galaxies found in infrared images of the giant galaxy cluster Abell 2744. This composite incorporates images taken through three NIRCam filters (F200W as blue, F410M as green, and F444W as red). The F410M filter is highly sensitive to light emitted by doubly ionized oxygen — oxygen atoms that have been stripped of two electrons — at a time when reionization was well underway. Emitted as green light, the glow was stretched into the infrared as it traversed the expanding universe over billions of years. The cluster’s mass acts as a natural magnifying glass, allowing astronomers to see these tiny galaxies as they were when the universe was about 800 million years old. NASA/ESA/CSA/Bezanson et al. 2024 and Wold et al. 2025
For much of its first billion years, the universe was immersed in a fog of neutral hydrogen gas. Today, this gas is ionized — stripped of its electrons. Astronomers, who refer to this transformation as reionization, have long wondered which types of objects were most responsible: big galaxies, small galaxies, or supermassive black holes in active galaxies. As one of its main goals, NASA’s Webb was specifically designed to address key questions about this major transition in the history of the universe.
Recent studies have shown that small galaxies undergoing vigorous star formation could have played an outsized role. Such galaxies are rare today, making up only about 1% of those around us. But they were abundant when the universe was about 800 million years old, an epoch astronomers refer to as redshift 7, when reionization was well underway.
The team searched for small galaxies of the right cosmic age that showed signs of extreme star formation, called starbursts, in NIRCam images of the cluster.
“Low-mass galaxies gather less neutral hydrogen gas around them, which makes it easier for ionizing ultraviolet light to escape,” Rhoads said. “Likewise, starburst episodes not only produce plentiful ultraviolet light — they also carve channels into a galaxy’s interstellar matter that helps this light break out.”
Image C: A deeper look into small, young, star-forming galaxies during reionization At left is an enlarged infrared view of galaxy cluster Abell 2744 with three young, star-forming galaxies highlighted by green diamonds. The center column shows close-ups of each galaxy, along with their designations, the amount of magnification provided by the cluster’s gravitational lens, their redshifts (shown as z — all correspond to a cosmic age of about 790 million years), and their estimated mass of stars. At right, measurements from NASA’s James Webb Space Telescope’s NIRSpec instrument confirm that the galaxies produce strong emission in the light of doubly ionized oxygen (green bars), indicating vigorous star formation is taking place. NASA/ESA/CSA/Bezanson et al. 2024 and Wold et al. 2025
The astronomers looked for strong sources of a specific wavelength of light that signifies the presence of high-energy processes: a green line emitted by oxygen atoms that have lost two electrons. Originally emitted as visible light in the early cosmos, the green glow from doubly ionized oxygen was stretched into the infrared as it traversed the expanding universe and eventually reached Webb’s instruments.
This technique revealed 83 small starburst galaxies as they appear when the universe was 800 million years old, or about 6% of its current age of 13.8 billion years. The team selected 20 of these for deeper inspection using NIRSpec.
“These galaxies are so small that, to build the equivalent stellar mass of our own Milky Way galaxy, you’d need from 2,000 to 200,000 of them,” Malhotra said. “But we are able to detect them because of our novel sample selection technique combined with gravitational lensing.”
Image D: Tiny but mighty galaxy helped clear cosmic fog One of the most interesting galaxies of the study, dubbed 41028 (the green oval at center), has an estimated stellar mass of just 2 million Suns — comparable to the masses of the largest star clusters in our own Milky Way galaxy. NASA/ESA/CSA/Bezanson et al. 2024 and Wold et al. 2025
Similar types of galaxies in the present-day universe, such as green peas, release about 25% of their ionizing ultraviolet light into surrounding space. If the low-mass starburst galaxies explored by Wold and his team release a similar amount, they can account for all of the ultraviolet light needed to convert the universe’s neutral hydrogen to its ionized form.
The James Webb Space Telescope is the world’s premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).
To learn more about Webb, visit:
By Francis Reddy
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Download high-resolution images from NASA’s Scientific Visualization Studio.
Media ContactsLaura Betz – laura.e.betz@nasa.gov
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Article: Types of Galaxies
Video: Different types of galaxies
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