Massive comet zooming through solar system could be alien technology, Harvard astrophysicist says

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than previous interstellar visitors.
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Interstellar Comet 3I/ATLAS Is About To Vanish From View – And Won't Be Back Until Later This Year

I nterstellar comet 3I/ATLAS is about to vanish from view. Earth and this interstellar interloper will be on opposite sides of the Sun for a little while. The glare of our star will be blocking the ...
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Interstellar comet 3I/Atlas about to be hit by coronal mass ejection

I/Atlas comet, which is 40 times brighter at present, will reportedly be struck by a CME released on September 19, 2025.