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By European Space Agency
High above the Arctic Circle, on the rugged terrain of Andøya, three ESA radionavigation engineers take a rare moment to unwind with a game of shuffleboard. Outside, sheep graze under the shimmering northern lights, a serene backdrop to their demanding mission: test how navigation technologies withstand interference signals. With 100TB of data collected over 5 days, their efforts promise to strengthen the reliability of satellite navigation for the benefit of us all.
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By NASA
Official portrait of NASA astronaut Jonny Kim, who will serve as a flight engineer during Expedition 73. Credit: NASA NASA will provide interview opportunities with astronaut Jonny Kim beginning at 9 a.m. EDT, Tuesday, March 18, to highlight his upcoming mission to the International Space Station in April.
The virtual interviews from Star City, Russia, will stream live on NASA+. Learn how to watch NASA content through a variety of platforms, including social media.
Media interested in participating must contact the newsroom at NASA’s Johnson Space Center in Houston no later than 5 p.m., Monday, March 17, at 281-483-5111 or jsccommu@mail.nasa.gov. A copy of NASA’s media accreditation policy is online.
Kim will launch on Tuesday, April 8, aboard the Roscosmos Soyuz MS-27 spacecraft, accompanied by Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky. The trio will spend approximately eight months aboard the orbital laboratory before returning to Earth in the fall 2025. During his time in orbit, Kim will conduct scientific investigations and technology demonstrations to help prepare the crew for future space missions and provide benefits to people on Earth.
Kim is making his first spaceflight after selection as part of the 2017 NASA astronaut class. A native of Los Angeles, he is a U.S. Navy lieutenant commander and dual designated naval aviator and flight surgeon. Kim also served as an enlisted Navy SEAL. He holds a bachelor’s degree in Mathematics from the University of San Diego and a medical degree from Harvard Medical School in Boston. He completed his internship with the Harvard Affiliated Emergency Medicine Residency at Massachusetts General Hospital and Brigham and Women’s Hospital. After completing initial astronaut candidate training, Kim supported mission and crew operations in various roles, including the Expedition 65 lead operations officer, T-38 operations liaison, and space station capcom chief engineer. Follow @jonnykimusa on X and @jonnykimusa on Instagram.
For more than two decades, people have lived and worked continuously aboard the International Space Station, advancing scientific knowledge, and making research breakthroughs that are not possible on Earth. The station is a critical testbed for NASA to understand and overcome the challenges of long-duration spaceflight and to expand commercial opportunities in low Earth orbit. As commercial companies focus on providing human space transportation services and destinations as part of a robust low Earth orbit economy, NASA is able to focus more of its resources on deep space missions to the Moon and Mars.
Learn more about International Space Station research and operations at:
https://www.nasa.gov/station
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Joshua Finch / Claire O’Shea
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / claire.a.o’shea@nasa.gov
Raegan Scharfetter
Johnson Space Center, Houston
281-910-4989
raegan.r.scharfetter@nasa.gov
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Last Updated Mar 11, 2025 EditorJessica TaveauLocationNASA Headquarters Related Terms
Humans in Space Astronauts Expedition 73 International Space Station (ISS) ISS Research Jonny Kim View the full article
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By NASA
Challenges to measuring space-induced brain changes
CSA (Canadian Space Agency) astronaut David Saint-Jacques undergoes an MRI for Wayfinding. CSA Researchers found that an upward shift in the brain during spaceflight makes it hard to distinguish different types of tissue, causing errors in determining changes in brain volume. Previous studies have interpreted these changes as evidence of adaptation to space. This finding suggests that unique methods are needed to analyze astronaut brain structure.
Wayfinding, a CSA (Canadian Space Agency) investigation, looked at how the brain adapts to space and readapts after return to normal gravity using a variety of assessments, including neuroimaging. The researchers propose that previous data could be reanalyzed based on the errors identified by this paper.
Catching micrometeoroids
JAXA’s (Japan Aerospace Exploration Agency) Tanpopo panels were mounted on the Exposed Experiment Handrail Attachment Mechanism (ExHAM) at top center of this image. JAXA/Takuya Onishi An impact track made by a micrometeoroid on a panel outside the International Space Station contained iron and orthopyroxene crystals. This finding, along with previous studies, suggests that micrometeoroids containing these elements are abundant in low Earth orbit and more measurements are needed to determine their origins and potential for carrying life.
At least 90% of meteoroids at one astronomical unit or AU (93 million miles or the distance between Earth and the Sun) do not reach Earth’s surface, so investigating those in low Earth orbit is key to understanding their nature. The JAXA (Japan Aerospace Exploration Agency) Tanpopo experiment placed blocks of a special gel outside the station to capture solid microparticles to test the theory that they could transport life among celestial bodies. Most meteoroids at one AU may have originated from Jupiter family comets.
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By European Space Agency
Marking another step towards new insights into Earth’s forests and their role in the carbon cycle, ESA’s groundbreaking Biomass satellite has arrived at Europe's Spaceport in French Guiana, to be prepared for liftoff on a Vega-C rocket at the end of April.
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By NASA
NASA/Joel Kowsky NASA Astronaut Tracy Dyson points to the Expedition 71 patch on her flight suit on Wednesday, March 5, 2025. Dyson and her fellow Expedition 71 crewmates Matthew Dominick, Michael Barratt, and Jeanette Epps answered questions from students at Elsie Whitlow Stokes Community Freedom Public Charter School in Washington.
While aboard the International Space Station, Dyson conducted dozens of scientific and technology activities to benefit future exploration in space and life back on Earth. She remotely controlled a robot on Earth’s surface from a computer aboard the station and evaluated orbit-to-ground operations. She operated a 3D bioprinter to print cardiac tissue samples, which could advance technology for creating replacement organs and tissues for transplants on Earth. Dyson also participated in the crystallization of model proteins to evaluate the performance of hardware that could be used for pharmaceutical production and ran a program that uses student-designed software to control the station’s free-flying robots, inspiring the next generation of innovators.
Image credit: NASA/Joel Kowsky
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