3I/ATLAS interstellar comet says goodbye as experts fear we may miss the next impact

For those of us who spent the last few months glancing nervously at the heavens, wondering if our latest celestial visitor ...
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Saying Goodbye to Comet 3I/ATLAS, the Interstellar Visitor That Briefly Called Our Solar System Home

Learn how you can say farewell to comet 3I/ATLAS as it passes by Earth on Dec. 19, 2025, and what we have learned during its brief visit near Earth.