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So long, Gaia: Europe officially retires prolific star-mapping space telescope
Meet the Space Ops Team: Anum Ashraf
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)For Anum Ashraf, Ph.D., the interconnectedness of NASA’s workforce presents the exciting opportunity to collaborate with a multitude of people and teams. With more than 11 years at the agency, Ashraf has played a fundamental role in leading efforts that actively bridge these connections and support NASA’s mission.
Ashraf serves as the mission commitment lead for NASA’s SCaN (Space Communication and Navigation) Program, which is managed through the agency’s Space Operations Mission Directorate. SCaN provides communications and navigation services that are essential to the operation of NASA’s spaceflight missions, including enabling the success of more than 100 NASA and non-NASA missions through the Near Space Network and Deep Space Network. Whether she is supporting missions involving astronauts in space or near-Earth missions monitoring the health of our planet, Ashraf ensures that critical data is efficiently transferred between groups.
Near Space Network antennas at the White Sands Complex in Las Cruces, New Mexico.NASA
“I am the ‘front door’ for all missions that are requesting space communication through the SCaN program,” said Ashraf. “My job is to understand the mission requirements and pair them with the right assets to enable successful back and forth communication throughout their mission life cycle.”
Prior to her current role, Ashraf served as the principal investigator for the DEMETER (DEMonstrating the Emerging Technology for measuring the Earth’s Radiation) project at NASA’s Langley Research Center in Hampton, Virginia. DEMETER is the next-generation observational platform for measuring Earth’s radiation. Leading a team of engineers and scientists across NASA’s multifaceted organizations, Ashraf helped develop an innovative solution that will allow future researchers to assess important climate trends affecting the planet.
Outside of work, Ashraf finds a creative outlet through hobbies like knitting, cross stitching, and playing piano. She brings her ambitious, passionate, and authentic qualities to caring for her two children, who are also her daily source of inspiration.
“Inspiration is a two-way street for me; my kids inspire me to be my best, and, in turn, I inspire them,” said Ashraf. “My kids love telling their friends that we are a NASA family.”
Anum Ashraf, Ph.D., mission commitment lead for NASA’s Space Communications and Navigation Program
Looking toward the future, Ashraf is excited to see a collaboration between NASA, industry, academia, and international space enthusiasts working together towards a common goal of space exploration. As a devoted and collaborative leader, Ashraf will continue to play an important role in advancing the agency’s missions of space research and exploration.
NASA’s Space Operations Mission Directorate maintains a continuous human presence in space for the benefit of people on Earth. The programs within the directorate are the hub of NASA’s space exploration efforts, enabling Artemis, commercial space, science, and other agency missions through communication, launch services, research capabilities, and crew support.
To learn more about NASA’s Space Operation Mission Directorate, visit:
https://www.nasa.gov/directorates/space-operations
Share Details Last Updated Mar 27, 2025 Related Terms Explore More 3 min read NASA Successfully Acquires GPS Signals on Moon Article 4 weeks ago 2 min read More Than 400 Lives Saved with NASA’s Search and Rescue Tech in 2024 Article 2 months ago 3 min read Meet the Space Ops Team: Lindsai Bland Article 2 months ago Keep Exploring Discover Related TopicsHumans In Space
International Space Station
Commercial Space
NASA Directorates
Meet the Space Ops Team: Anum Ashraf
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)For Anum Ashraf, Ph.D., the interconnectedness of NASA’s workforce presents the exciting opportunity to collaborate with a multitude of people and teams. With more than 11 years at the agency, Ashraf has played a fundamental role in leading efforts that actively bridge these connections and support NASA’s mission.
Ashraf serves as the mission commitment lead for NASA’s SCaN (Space Communication and Navigation) Program, which is managed through the agency’s Space Operations Mission Directorate. SCaN provides communications and navigation services that are essential to the operation of NASA’s spaceflight missions, including enabling the success of more than 100 NASA and non-NASA missions through the Near Space Network and Deep Space Network. Whether she is supporting missions involving astronauts in space or near-Earth missions monitoring the health of our planet, Ashraf ensures that critical data is efficiently transferred between groups.
Near Space Network antennas at the White Sands Complex in Las Cruces, New Mexico.NASA“I am the ‘front door’ for all missions that are requesting space communication through the SCaN program,” said Ashraf. “My job is to understand the mission requirements and pair them with the right assets to enable successful back and forth communication throughout their mission life cycle.”
Prior to her current role, Ashraf served as the principal investigator for the DEMETER (DEMonstrating the Emerging Technology for measuring the Earth’s Radiation) project at NASA’s Langley Research Center in Hampton, Virginia. DEMETER is the next-generation observational platform for measuring Earth’s radiation. Leading a team of engineers and scientists across NASA’s multifaceted organizations, Ashraf helped develop an innovative solution that will allow future researchers to assess important climate trends affecting the planet.
Outside of work, Ashraf finds a creative outlet through hobbies like knitting, cross stitching, and playing piano. She brings her ambitious, passionate, and authentic qualities to caring for her two children, who are also her daily source of inspiration.
“Inspiration is a two-way street for me; my kids inspire me to be my best, and, in turn, I inspire them,” said Ashraf. “My kids love telling their friends that we are a NASA family.”
Anum Ashraf, Ph.D., mission commitment lead for NASA’s Space Communications and Navigation ProgramLooking toward the future, Ashraf is excited to see a collaboration between NASA, industry, academia, and international space enthusiasts working together towards a common goal of space exploration. As a devoted and collaborative leader, Ashraf will continue to play an important role in advancing the agency’s missions of space research and exploration.
NASA’s Space Operations Mission Directorate maintains a continuous human presence in space for the benefit of people on Earth. The programs within the directorate are the hub of NASA’s space exploration efforts, enabling Artemis, commercial space, science, and other agency missions through communication, launch services, research capabilities, and crew support.
To learn more about NASA’s Space Operation Mission Directorate, visit:
https://www.nasa.gov/directorates/space-operations
Share Details Last Updated Mar 27, 2025 Related Terms Explore More 3 min read NASA Successfully Acquires GPS Signals on Moon Article 4 weeks ago 2 min read More Than 400 Lives Saved with NASA’s Search and Rescue Tech in 2024 Article 2 months ago 3 min read Meet the Space Ops Team: Lindsai Bland Article 2 months ago Keep Exploring Discover Related TopicsHumans In Space
International Space Station
Commercial Space
NASA Directorates
NEO Surveyor Instrument Enclosure Inside Historic Chamber A
NEO Surveyor Instrument Enclosure Inside Historic Chamber A
The instrument enclosure of NASA’s Near-Earth Object Surveyor is prepared for critical environmental tests inside the historic Chamber A at the Space Environment Simulation Laboratory at NASA’s Johnson Space Center in Houston in December 2024. Wrapped in silver thermal blanketing, the 12-foot-long (3.7-meter-long) angular structure was subjected to the frigid, airless conditions that the spacecraft will experience when in deep space. The cavernous thermal-vacuum test facility is famous for testing the Apollo spacecraft that traveled to the Moon in the 1960s and ’70s.
The instrument enclosure is designed to protect the spacecraft’s infrared telescope while also removing heat from it during operations. After environmental testing was completed, the enclosure returned to NASA’s Jet Propulsion Laboratory in Southern California for further work, after which it will ship to the Space Dynamics Laboratory (SDL) in Logan, Utah, and be joined to the telescope. Both the instrument enclosure and telescope were assembled at JPL.
As NASA’s first space-based detection mission specifically designed for planetary defense, NEO Surveyor will seek out, measure, and characterize the hardest-to-find asteroids and comets that might pose a hazard to Earth. While many near-Earth objects don’t reflect much visible light, they glow brightly in infrared light due to heating by the Sun. The spacecraft’s telescope, which has an aperture of nearly 20 inches (50 centimeters), features detectors sensitive to two infrared wavelengths in which near-Earth objects re-radiate solar heat.
More information about NEO Surveyor is available at: https://science.nasa.gov/mission/neo-surveyor/
Image credit: NASA
NEO Surveyor Instrument Enclosure Inside Historic Chamber A
The instrument enclosure of NASA’s Near-Earth Object Surveyor is prepared for critical environmental tests inside the historic Chamber A at the Space Environment Simulation Laboratory at NASA’s Johnson Space Center in Houston in December 2024. Wrapped in silver thermal blanketing, the 12-foot-long (3.7-meter-long) angular structure was subjected to the frigid, airless conditions that the spacecraft will experience when in deep space. The cavernous thermal-vacuum test facility is famous for testing the Apollo spacecraft that traveled to the Moon in the 1960s and ’70s.
The instrument enclosure is designed to protect the spacecraft’s infrared telescope while also removing heat from it during operations. After environmental testing was completed, the enclosure returned to NASA’s Jet Propulsion Laboratory in Southern California for further work, after which it will ship to the Space Dynamics Laboratory (SDL) in Logan, Utah, and be joined to the telescope. Both the instrument enclosure and telescope were assembled at JPL.
As NASA’s first space-based detection mission specifically designed for planetary defense, NEO Surveyor will seek out, measure, and characterize the hardest-to-find asteroids and comets that might pose a hazard to Earth. While many near-Earth objects don’t reflect much visible light, they glow brightly in infrared light due to heating by the Sun. The spacecraft’s telescope, which has an aperture of nearly 20 inches (50 centimeters), features detectors sensitive to two infrared wavelengths in which near-Earth objects re-radiate solar heat.
More information about NEO Surveyor is available at: https://science.nasa.gov/mission/neo-surveyor/
Image credit: NASA
2 newly found exoplanets reignite an outstanding question about our solar system
Dark Matter Could Make Planets Spin Faster
Dark matter is a confounding concept that teeters on the leading edges of cosmology and physics. We don't know what it is or how exactly it fits into the Standard Cosmological Model. We only know that its unseen mass is a critical part of the Universe.
This Star Wars The Black Series Force FX lightsaber is its lowest-ever price and 55% off for Amazon's Big Spring Sale
Understanding Cosmic Explosions: StarBurst Arrives at NASA for Testing
StarBurst, a wide-field gamma ray observatory, arrived at NASA’s Marshall Space Flight Center in Huntsville, Alabama, March 4 for environmental testing and final instrument integration. The instrument is designed to detect the initial emission of short gamma-ray bursts, a key electromagnetic indicator of neutron star mergers.
“Gamma-ray bursts are among the most powerful explosions in the universe, and they serve as cosmic beacons that help us understand extreme physics, including black hole formation and the behavior of matter under extreme conditions,” said Dr. Daniel Kocevski, principal investigator of the StarBurst mission at NASA Marshall.
According to Kocevski, neutron star mergers are particularly exciting because they produce gamma-ray bursts and gravitational waves, meaning scientists can study these events using two different signals – light and ripples in space time.
Starburst Principal Investigator Dr. Daniel Kocevski, left, and Integration and Test Engineer Elise Doan, right, pose with the StarBurst instrument after it was unboxed in the cleanroom environment at NASA Marshall. The Naval Research Lab transferred the instrument to NASA in early March.Image Credit: NASA/Davy Haynes
The merging of neutron stars forges heavy elements such as gold and platinum, revealing the origins of some of Earth’s building blocks.
“By studying these gamma-ray bursts and the neutron star mergers that produce them, we gain insights into fundamental physics, the origins of elements, and even the expansion of the universe,” Kocevski said. “Neutron star mergers and gamma-ray bursts are nature’s laboratories for testing our understanding of the cosmos.”
StarBurst will undergo flight vibration and thermal vacuum testing at Marshall in the Sunspot Thermal Vacuum Testing Facility. These tests ensure it can survive the rigors of launch and harsh environment of space.
Final instrument integration will happen in the Stray Light Facility, which is a specialized environment to help identify and reduce unwanted light in certain areas of the optical systems.
The StarBurst Multimessenger Pioneer is a wide-field gamma-ray observatory designed to detect the initial emission of short gamma-ray bursts, important electromagnetic indicators of neutron star mergers. With an effective area over five times that of the Fermi Gamma-ray Burst Monitor and complete visibility of the unobscured sky, StarBurst will conduct sensitive observations. NASA/Daniel Kocevski
StarBurst is a collaborative effort led by NASA’s Marshall Space Flight Center, with partnerships with the U.S. Naval Research Laboratory, the University of Alabama Huntsville, the Universities Space Research Association, and the UTIAS Space Flight Laboratory. StarBurst was selected for development as part of the NASA Astrophysics Pioneers program, which supports lower-cost, smaller hardware missions to conduct compelling astrophysics science.
To learn more about StarBurst visit:
https://science.nasa.gov/mission/starburst/
Media Contact:
Lane Figueroa
Marshall Space Flight Center
Huntsville, Alabama
256.544.0034
lane.e.figueroa@nasa.gov
Understanding Cosmic Explosions: StarBurst Arrives at NASA for Testing
StarBurst, a wide-field gamma ray observatory, arrived at NASA’s Marshall Space Flight Center in Huntsville, Alabama, March 4 for environmental testing and final instrument integration. The instrument is designed to detect the initial emission of short gamma-ray bursts, a key electromagnetic indicator of neutron star mergers.
“Gamma-ray bursts are among the most powerful explosions in the universe, and they serve as cosmic beacons that help us understand extreme physics, including black hole formation and the behavior of matter under extreme conditions,” said Dr. Daniel Kocevski, principal investigator of the StarBurst mission at NASA Marshall.
According to Kocevski, neutron star mergers are particularly exciting because they produce gamma-ray bursts and gravitational waves, meaning scientists can study these events using two different signals – light and ripples in space time.
Starburst Principal Investigator Dr. Daniel Kocevski, left, and Integration and Test Engineer Elise Doan, right, pose with the StarBurst instrument after it was unboxed in the cleanroom environment at NASA Marshall. The Naval Research Lab transferred the instrument to NASA in early March.Image Credit: NASA/Davy HaynesThe merging of neutron stars forges heavy elements such as gold and platinum, revealing the origins of some of Earth’s building blocks.
“By studying these gamma-ray bursts and the neutron star mergers that produce them, we gain insights into fundamental physics, the origins of elements, and even the expansion of the universe,” Kocevski said. “Neutron star mergers and gamma-ray bursts are nature’s laboratories for testing our understanding of the cosmos.”
StarBurst will undergo flight vibration and thermal vacuum testing at Marshall in the Sunspot Thermal Vacuum Testing Facility. These tests ensure it can survive the rigors of launch and harsh environment of space.
Final instrument integration will happen in the Stray Light Facility, which is a specialized environment to help identify and reduce unwanted light in certain areas of the optical systems.
The StarBurst Multimessenger Pioneer is a wide-field gamma-ray observatory designed to detect the initial emission of short gamma-ray bursts, important electromagnetic indicators of neutron star mergers. With an effective area over five times that of the Fermi Gamma-ray Burst Monitor and complete visibility of the unobscured sky, StarBurst will conduct sensitive observations. NASA/Daniel KocevskiStarBurst is a collaborative effort led by NASA’s Marshall Space Flight Center, with partnerships with the U.S. Naval Research Laboratory, the University of Alabama Huntsville, the Universities Space Research Association, and the UTIAS Space Flight Laboratory. StarBurst was selected for development as part of the NASA Astrophysics Pioneers program, which supports lower-cost, smaller hardware missions to conduct compelling astrophysics science.
To learn more about StarBurst visit:
https://science.nasa.gov/mission/starburst/
Media Contact:
Lane Figueroa
Marshall Space Flight Center
Huntsville, Alabama
256.544.0034
lane.e.figueroa@nasa.gov
Watch two new trailers for 'The Alters', an upcoming sci-fi survival game where you clone yourself in a giant rolling base (video)
Little red dots seen by JWST might be a kind of black hole 'star'
Little red dots seen by JWST might be a kind of black hole 'star'
Fat Doesn’t Deserve Its Bad Rap
Fat is one of the most active, dynamic organs we have. Why can’t we learn to love it?
NASA’s Dust Shield Successfully Repels Lunar Regolith on Moon
NASA’s Electrodynamic Dust Shield (EDS) successfully demonstrated its ability to remove regolith, or lunar dust and dirt, from its various surfaces on the Moon during Firefly Aerospace’s Blue Ghost Mission 1, which concluded on March 16. Lunar dust is extremely abrasive and electrostatic, which means it clings to anything that carries a charge. It can damage everything from spacesuits and hardware to human lungs, making lunar dust one of the most challenging features of living and working on the lunar surface. The EDS technology uses electrodynamic forces to lift and remove the lunar dust from its surfaces. The “before” image highlights the glass and thermal radiator surfaces covered in a layer of regolith, while the “after” image reveals the results following EDS activation. Dust was removed from both surfaces, proving the technology’s effectiveness in mitigating dust accumulation.
This milestone marks a significant step toward sustaining long-term lunar and interplanetary operations by reducing dust-related hazards to a variety of surfaces for space applications ranging from thermal radiators, solar panels, and camera lenses to spacesuits, boots, and helmet visors. The EDS technology is paving the way for future dust mitigation solutions, supporting NASA’s Artemis campaign and beyond. NASA’s Electrodynamic Dust Shield was developed at Kennedy Space Center in Florida with funding from NASA’s Game Changing Development Program, managed by the agency’s Space Technology Mission Directorate.
Image Credit: NASA
NASA’s Dust Shield Successfully Repels Lunar Regolith on Moon
NASA’s Electrodynamic Dust Shield (EDS) successfully demonstrated its ability to remove regolith, or lunar dust and dirt, from its various surfaces on the Moon during Firefly Aerospace’s Blue Ghost Mission 1, which concluded on March 16. Lunar dust is extremely abrasive and electrostatic, which means it clings to anything that carries a charge. It can damage everything from spacesuits and hardware to human lungs, making lunar dust one of the most challenging features of living and working on the lunar surface. The EDS technology uses electrodynamic forces to lift and remove the lunar dust from its surfaces. The “before” image highlights the glass and thermal radiator surfaces covered in a layer of regolith, while the “after” image reveals the results following EDS activation. Dust was removed from both surfaces, proving the technology’s effectiveness in mitigating dust accumulation.
This milestone marks a significant step toward sustaining long-term lunar and interplanetary operations by reducing dust-related hazards to a variety of surfaces for space applications ranging from thermal radiators, solar panels, and camera lenses to spacesuits, boots, and helmet visors. The EDS technology is paving the way for future dust mitigation solutions, supporting NASA’s Artemis campaign and beyond. NASA’s Electrodynamic Dust Shield was developed at Kennedy Space Center in Florida with funding from NASA’s Game Changing Development Program, managed by the agency’s Space Technology Mission Directorate.
Image Credit: NASA
NASA stacks moon-bound Artemis 2 rocket: Space photo of the day
NASA, NSIDC Scientists Say Arctic Winter Sea Ice at Record Low
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) Ice cover ebbs and flows through the seasons in the Arctic (left) and the Antarctic (right). Overall, ice cover has declined since scientists started tracking it half a century ago. Download this visualization from NASA’s Scientific Visualization Studio: https://svs.gsfc.nasa.gov/5099Trent Schindler/NASA’s Scientific Visualization StudioWinter sea ice cover in the Arctic was the lowest it’s ever been at its annual peak on March 22, 2025, according to NASA and the National Snow and Ice Data Center (NSIDC) at the University of Colorado, Boulder. At 5.53 million square miles (14.33 million square kilometers), the maximum extent fell below the prior low of 5.56 million square miles (14.41 million square kilometers) in 2017.
In the dark and cold of winter, sea ice forms and spreads across Arctic seas. But in recent years, less new ice has been forming, and less multi-year ice has accumulated. This winter continued a downward trend scientists have observed over the past several decades. This year’s peak ice cover was 510,000 square miles (1.32 million square kilometers) below the average levels between 1981 and 2010.
In 2025, summer ice in the Antarctic retreated to 764,000 square miles (1.98 million square kilometers) on March 1, tying for the second lowest minimum extent ever recorded. That’s 30% below the 1.10 million square miles (2.84 million square kilometers) that was typical in the Antarctic prior to 2010. Sea ice extent is defined as the total area of the ocean with at least 15% ice concentration.
The reduction in ice in both polar regions has led to another milestone — the total amount of sea ice on the planet reached an all-time low. Globally, ice coverage in mid-February of this year declined by more than a million square miles (2.5 million square kilometers) from the average before 2010. Altogether, Earth is missing an area of sea ice large enough to cover the entire continental United States east of the Mississippi.
“We’re going to come into this next summer season with less ice to begin with,” said Linette Boisvert, an ice scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “It doesn’t bode well for the future.”
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Observations since 1978 show that ice cover has declined at both poles, leading to a downward trend in the total ice cover over the entire planet. In February 2025, global ice fell to the smallest area ever recorded. Download this visualization from NASA's Scientific Visualization Studio: https://svs.gsfc.nasa.gov/5521Mark Subbaro/NASA's Scientific Visualization StudioScientists primarily rely on satellites in the Defense Meteorological Satellite Program, which measure Earth’s radiation in the microwave range. This natural radiation is different for open water and for sea ice — with ice cover standing out brightly in microwave-based satellite images. Microwave scanners can also penetrate through cloud cover, allowing for daily global observations. The DMSP data are augmented with historical sources, including data collected between 1978 and 1985 with the Nimbus-7 satellite that was jointly operated by NASA and the National Oceanic and Atmospheric Administration.
“It’s not yet clear whether the Southern Hemisphere has entered a new norm with perennially low ice or if the Antarctic is in a passing phase that will revert to prior levels in the years to come,” said Walt Meier, an ice scientist with NSIDC.
Credits: Charles Connell / NASA Goddard Space Flight CenterBy James Riordon
NASA’s Earth Science News Team
Media contact: Elizabeth Vlock
NASA Headquarters
This summer, Arctic sea ice decreased to a its minimum extent on September 11, 2024.…
Article 6 months ago 1 min read Keeping PACE with the OceansNASA can detect tiny organisms, phytoplankton, that affect the color of ocean from space, and…
Article 9 months ago 1 min read Antarctic Sea Ice Hits Annual Minimum, Second Lowest On RecordOn February 20th, 2024, Antarctic sea ice officially reached its minimum extent for the year.
Article 1 year ago Keep Exploring Discover More Topics From NASAMissions
Humans in Space
Climate Change
Solar System
NASA, NSIDC Scientists Say Arctic Winter Sea Ice at Record Low
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater) Ice cover ebbs and flows through the seasons in the Arctic (left) and the Antarctic (right). Overall, ice cover has declined since scientists started tracking it half a century ago. Download this visualization from NASA’s Scientific Visualization Studio: https://svs.gsfc.nasa.gov/5099Trent Schindler/NASA’s Scientific Visualization StudioWinter sea ice cover in the Arctic was the lowest it’s ever been at its annual peak on March 22, 2025, according to NASA and the National Snow and Ice Data Center (NSIDC) at the University of Colorado, Boulder. At 5.53 million square miles (14.33 million square kilometers), the maximum extent fell below the prior low of 5.56 million square miles (14.41 million square kilometers) in 2017.
In the dark and cold of winter, sea ice forms and spreads across Arctic seas. But in recent years, less new ice has been forming, and less multi-year ice has accumulated. This winter continued a downward trend scientists have observed over the past several decades. This year’s peak ice cover was 510,000 square miles (1.32 million square kilometers) below the average levels between 1981 and 2010.
In 2025, summer ice in the Antarctic retreated to 764,000 square miles (1.98 million square kilometers) on March 1, tying for the second lowest minimum extent ever recorded. That’s 30% below the 1.10 million square miles (2.84 million square kilometers) that was typical in the Antarctic prior to 2010. Sea ice extent is defined as the total area of the ocean with at least 15% ice concentration.
The reduction in ice in both polar regions has led to another milestone — the total amount of sea ice on the planet reached an all-time low. Globally, ice coverage in mid-February of this year declined by more than a million square miles (2.5 million square kilometers) from the average before 2010. Altogether, Earth is missing an area of sea ice large enough to cover the entire continental United States east of the Mississippi.
“We’re going to come into this next summer season with less ice to begin with,” said Linette Boisvert, an ice scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “It doesn’t bode well for the future.”
To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video
Observations since 1978 show that ice cover has declined at both poles, leading to a downward trend in the total ice cover over the entire planet. In February 2025, global ice fell to the smallest area ever recorded. Download this visualization from NASA's Scientific Visualization Studio: https://svs.gsfc.nasa.gov/5521Mark Subbaro/NASA's Scientific Visualization StudioScientists primarily rely on satellites in the Defense Meteorological Satellite Program, which measure Earth’s radiation in the microwave range. This natural radiation is different for open water and for sea ice — with ice cover standing out brightly in microwave-based satellite images. Microwave scanners can also penetrate through cloud cover, allowing for daily global observations. The DMSP data are augmented with historical sources, including data collected between 1978 and 1985 with the Nimbus-7 satellite that was jointly operated by NASA and the National Oceanic and Atmospheric Administration.
“It’s not yet clear whether the Southern Hemisphere has entered a new norm with perennially low ice or if the Antarctic is in a passing phase that will revert to prior levels in the years to come,” said Walt Meier, an ice scientist with NSIDC.
Credits: Charles Connell / NASA Goddard Space Flight CenterBy James Riordon
NASA’s Earth Science News Team
Media contact: Elizabeth Vlock
NASA Headquarters
This summer, Arctic sea ice decreased to a its minimum extent on September 11, 2024.…
Article 6 months ago 1 min read Keeping PACE with the OceansNASA can detect tiny organisms, phytoplankton, that affect the color of ocean from space, and…
Article 9 months ago 1 min read Antarctic Sea Ice Hits Annual Minimum, Second Lowest On RecordOn February 20th, 2024, Antarctic sea ice officially reached its minimum extent for the year.
Article 1 year ago Keep Exploring Discover More Topics From NASAMissions
Humans in Space
Climate Change
Solar System