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Antarctic Sea Ice Near Historic Lows; Arctic Ice Continues Decline
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By European Space Agency
For decades, satellites have played a crucial role in our understanding of the remote polar regions. The ongoing loss of Antarctic ice, owing to the climate crisis, is, sadly, no longer surprising. However, satellites do more than just track the accelerating flow of glaciers towards the ocean and measure ice thickness.
New research highlights how ESA’s CryoSat mission has been used to uncover the hidden impact of subglacial lakes – vast reservoirs of water buried deep under the ice – that can suddenly drain into the ocean in dramatic outbursts and affect ice loss.
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
The International Space Station is pictured from the SpaceX Dragon spacecraft by a Crew-8 member shortly after undocking from the Harmony module’s space-facing port as the orbital outpost was soaring 272 miles above the cloudy Patagonia region of South America.NASA NASA is seeking proposals for two new private astronaut missions to the International Space Station, targeted for 2026 and 2027, as the agency continues its commitment to expanding access to space. These private missions enable American commercial companies to further develop capabilities and support a continuous human presence in low Earth orbit.
“We are in an incredible time for human spaceflight, with more opportunities to access space and grow a thriving commercial economy in low Earth orbit,” said Dana Weigel, program manager for the International Space Station at NASA’s Johnson Space Center in Houston. “NASA remains committed to supporting this expansion by leveraging our decades of expertise to help industry gain the experience needed to train and manage crews, conduct research, and develop future destinations. Private astronaut missions are a key part of this effort, providing companies with hands-on opportunities to refine their capabilities and build partnerships that will shape the future of low Earth orbit.”
The new flight opportunities will be the fifth and sixth private astronaut missions to the orbiting laboratory coordinated by NASA. The first three missions were accomplished by Axiom Space in April 2022, May 2023, and January 2024, with a fourth scheduled for no earlier than May 2025.
Each of the new missions may be docked to the space station for up to 14 days. Specific dates depend on spacecraft traffic at the space station and in-orbit activity planning and constraints. Private astronaut missions must be brokered by a U.S. entity and use U.S. transportation spacecraft that meet NASA’s International Space Station visiting vehicle requirements, policies, and procedures. For additional details, refer to Focus Area 4A of NASA Research Announcement (NRA) NNJ13ZBG001N.
Proposals are due by 5 p.m. EDT on Friday, May 30, 2025.
For solicitation information, visit:
https://www.nasa.gov/johnson/jsc-procurement/pam
For more than two decades, people have lived and worked continuously aboard the International Space Station, advancing scientific knowledge and demonstrating new technologies, making research breakthroughs 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’s Artemis campaign is underway at the Moon, where the agency is preparing for future human exploration of Mars.
Learn more about the International Space Station at:
https://www.nasa.gov/station
Keep Exploring Discover More Topics
Low Earth Orbit Economy
Commercial Space
Commercial Crew Program
Humans In Space
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By NASA
NASA/Jordan Cochran Thomas Ozoroski, a researcher at NASA’s Glenn Research Center in Cleveland, takes icing accretion measurements in October 2024 as part of transonic truss-braced wing concept research.
In the future, aircraft with long, thin wings supported by aerodynamic braces could help airlines save on fuel costs – but those same wings could be susceptible to ice buildup. In the historic Icing Research Tunnel at NASA Glenn, scientists and engineers are testing a concept for a transonic truss-braced wing. Their goal: to collect important data to inform the design of these potential efficient aircraft of the future.
NASA Glenn can simulate icing conditions in its Icing Research Tunnel to identify potential challenges for new aircraft designs. These tests provide valuable information about how ice builds up on wings and can help identify the most critical icing conditions for safety.
Read more about icing testing at NASA Glenn.
Image credit: NASA/Jordan Cochran
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By European Space Agency
Launched just seven months ago, ESA’s Arctic Weather Satellite has been proving how the New Space approach can accelerate the development of missions capable of delivering detailed temperature and humidity profiles for short-term weather forecasts.
Moreover, the impact of this tiny prototype satellite goes even further – its measuring instrument has been recognised as able to provide data that’s on a par with traditional large missions.
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By European Space Agency
Video: 00:15:30 Meet Arnaud Prost—aerospace engineer, professional diver, and member of ESA’s Astronaut Reserve. From flying aircraft to getting a taste of spacewalk simulation, his passion for exploration knows no bounds.
In this miniseries, we take you on a journey through the ESA Astronaut Reserve, diving into the first part of their Astronaut Reserve Training (ART) at the European Astronaut Centre (EAC) near Cologne, Germany. Our “ARTists” are immersing themselves in everything from ESA and the International Space Station programme to the European space industry and institutions. They’re gaining hands-on experience in technical skills like spacecraft systems and robotics, alongside human behaviour, scientific lessons, scuba diving, and survival training.
ESA’s Astronaut Reserve Training programme is all about building Europe’s next generation of space explorers—preparing them for the opportunities of future missions in Earth orbit and beyond.
This interview was recorded in November 2024.
You can listen to this episode on all major podcast platforms.
Keep exploring with ESA Explores!
Learn more about Arnaud’s PANGAEA training here.
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