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The Week Ahead
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NASA Astronomy Picture of the Day
3I/ATLAS Flyby
Attention grabbing interstellar visitor 3I/ATLAS made its not-so-close flyby of our fair planet on December 19 at a distance of 1.8 astronomical units. That's about 900 light-seconds. This deep exposure captures the comet from another star system as it gently swept across a faint background of stars in the constellation Leo about 4 days earlier. Though faint, colors emphasized in the image data show off the comet's yellowish dust tail and bluish ion tail along with a greenish tinged coma. And even as it is scrutinized by arrays of telescopes and spacecraft from planet Earth, 3I/ATLAS is headed out of the Solar System. It's presently moving outward along a hyperbolic trajectory at about 64 kilometers per second relative to the Sun, too fast to be bound by the Sun's gravity.
Image credit: Dan Bartlett — APOD is a service of NASA and Michigan Tech. U.
View on NASA APODSpace News
NASA's Artemis II crew - including astronauts Andre Douglas, Victor Glover, Christina Koch, Reid Wiseman, and Canadian astronauts Jenni Gibbons and Jeremy Hansen - has been officially sent off for their historic Moon mission.
NASA — 30 Mar 2026
NASA awarded Intuitive Machines $180.4 million to deliver seven science payloads to the lunar surface through the CLPS initiative, supporting the Artemis program.
NASA — 27 Mar 2026
NASA selected 10 scientists to develop the lunar surface science plan for Artemis astronauts, including deploying instruments and collecting Moon rocks at the lunar south pole.
NASA — 27 Mar 2026
NASA released the Artemis II launch countdown, targeting no earlier than April 1, 2026, for the crewed mission around the Moon with four astronauts.
NASA — 26 Mar 2026
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