A comet screaming in from another star system carried alien ice ratios never seen before. What scientists found inside its spinning nucleus is reshaping how we picture worlds beyond our sun.

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Harvard astrophysicist Avi Loeb argues 3I/ATLAS and other interstellar objects may hint at alien technology, drawing fame, ...

Astronomer Avi Loeb gives his thoughts on the prospect of finding signs of intelligent life beyond our Solar System.

Scientists studying the comet 3I/ATLAS have determined that this interstellar visitor is remarkably ancient — formed an estimated 10 to 12 billion years ago in a primordial planetary system — and has ...