APOD: 2026 September 23 – A New Lunar Crater: McGetchin

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APOD Science APOD APOD: 2026 September 23 – A… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss APOD Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. AfterBefore A […]

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Winter Rains Trigger Spectacular Wildflower Blooms Across Western Australia

Western Australia has experienced an exceptional season of wildflower blooms this year. Heavy winter rainfall is credited with triggering the vibrant floral display across the region's arid landscapes. Vast stretches of typically dry, ochre-colored terrain have been transformed by dense carpets of colorful wildflowers. NASA highlighted the phenomenon, drawing attention to the striking visual contrast between the blooms and the surrounding desert environment.

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Curiosity Rover Resumes Science Work After Labor Day Break on Mars Mission

NASA's Curiosity rover team resumed operations this week following a brief pause due to Labor Day, a public holiday observed across North America on the first Monday of September. The planning team, which includes many members based in North America, conducted two planning sessions on Tuesday and Friday, September 11, 2026. The mission focus involved examining banded geological features on the Martian surface. Catherine O'Connell-Cooper, APXS Strategic Planner and Payload Uplink/Downlink Lead from the University of New Brunswick, Canada, reported on the week's activities. The rover continues its long-running scientific exploration, now surpassing sol 5010 of its mission on Mars.

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NASA Working Group Reviews Decompression and Blood Clot Risks for Artemis Missions

NASA's Office of the Chief Health and Medical Officer established a working group in August 2026 to assess health risks facing astronauts on Artemis lunar missions. The group reviewed data on decompression sickness linked to spacewalk prebreathe procedures, as well as in-flight cases of venous thromboembolism, or blood clots. Researchers also examined the implications of patent foramen ovale, a heart condition, in the context of these risks. The working group's recommendations build on findings from earlier OCHMO-led reviews, integrating previous outcomes into updated guidance for deep-space missions.

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NASA-Funded Study Finds Complex Organism Surviving Extreme Heat in Volcanic Park

NASA-supported scientists have discovered a complex organism capable of surviving temperatures previously considered lethal for advanced life forms. High heat typically destroys critical cell components, posing a particular threat to organisms with nuclei that house sensitive genetic material. The organism was found thriving in the hot waters of Lassen Volcanic National Park in California. The discovery challenges existing scientific understanding of the thermal limits that complex, nucleus-bearing life can endure.

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