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

The United States is stepping back from the most direct test yet of possible alien biology on Mars just as new telescopes and ...

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 ...