The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

AUSTIN — What if the big question surrounding the existence of aliens wasn’t whether they exist but why the U.S. government has been hiding this information from the American public for so long? And ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If life can exist—and persist—in seclusion, and in some of the harshest conditions on Earth (just look at ...

Steven Spielberg poses with the animatronic puppet from ET at Carlo Rambaldi’s studio in April 1982 - Mark Sennet/Getty Images Shortly after ET the Extra-Terrestrial was released in 1982, Ronald ...

People who believe they've been abducted by aliens have always resided at the farthest fringes of science, and the recent claim by a UFO cult known as the Raelians that they had cloned a human being ...