Australia's space agency said there's a completely rational, albeit cosmic, explanation behind the mysterious orbs that ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Long before modern space exploration, scientists proposed astonishing ways to contact extraterrestrials—from giant burning ...

The grainy photos show a tailless shape with canards slipping through the Nevada night, and the internet reached for aliens.

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Some of these approaches may show promise, but new research indicates much of today’s AI is even more easily duped by false ...