For decades, astronomers have chased fleeting hints that something alive might be lurking beyond Earth, only to watch each ...

Language and radio signals may not matter to aliens. Instead, they might be using patterns to leave a biological fingerprint.

NASA has quietly hit pause on what it billed as its first dedicated hunt for alien biosignatures, reacting to fresh data that ...

Is it the invasion of the genome snatchers? Just in case the idea of aliens walking around in human skin suits wasn’t frightening enough. An outlandish study asserts that aliens might have abducted us ...