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

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.

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 ...