Astronomers are ready to search for the fingerprints of life in faraway planetary atmospheres. But first, they need to know where to look — and that means figuring out which planets are likely to have ...

Recent research has uncovered a surprising twist in the search for extraterrestrial life: cosmic rays, typically seen as hazardous to life, may actually support alien life on cold, dark moons in our ...

High-energy particles zipping through the cosmos are harmful to life on Earth, but scientists think it could be food for potential alien life elsewhere. Saturn's moon Enceladus (shown here in a 2006 ...