For years, the search for alien life has focused on Earth-like planets orbiting distant stars. But this episode explores a ...

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 ...

Humans should look to planetary alignments outside of the solar system when searching for signatures of extraterrestrial communications, scientists say. The nascent search for radio transmissions from ...

Alien planets are far away but extreme lasers on Earth are giving scientists a way to investigate what they're like.