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Our Solar System Has a New Visitor: Interstellar Comet Could Be Nearly As Old as the Galaxy Itself

U-M astronomers are helping study a fast-moving, ancient, and massive comet that formed beyond our galaxy. A group of ...
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Comet Approaching Earth Possible Alien Probe, Ivy League Scientist Says

A Harvard University astrophysicist has suggested the incoming interstellar object 3I/ATLAS could be an alien probe. But NASA ...