We might have had it wrong this whole time.

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 ...

If we discover alien life, what will it look like? We have no way of knowing, but the hunt for extraterrestrial life can now include purple bacteria, according to a group of astronomers who are ...