Elon Musk has turned a long-running joke about being an extraterrestrial into a central part of his public persona, even as ...

Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien technology.

SETI@home has been one of the largest citizen science projects ever, with millions of users around the world.