SHOCKED astronomers have spotted a “rogue” planet that defies historic theories. A unique “inside out” planetary system ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” who look suspiciously like us in rubber suits. The scientists who actually ...

Within the lifetimes of today’s teenagers, some of the world’s most respected researchers now say the discovery of alien life is not just possible but likely. The claim that we could confirm life ...

For more than 60 years, scientists have been scanning the skies for signs of intelligent life beyond Earth. Using powerful telescopes, they have searched for unusual radio signals, brief laser flashes ...

Alien solar systems that are home to so-called "hot Jupiters" — gas giants circling sizzlingly close to their stars — are unlikely homes for Earth-like planets, researchers say. Hot Jupiters get their ...