Explore NASA’s 2025 comet watchlist, which features the interstellar visitor Comet 3I/ATLAS and 8 others reshaping U.S. space ...
Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...
An astronomer in Italy caught a fortuitous image of the bright comet Lemmon seemingly entwined with the glowing trail of a ...
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