From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

David Bowie as Thomas Jerome Newton in 'The Man Who Fell to Earth'; a Xenomorph in 'Aliens'; Scarlett Johansson as the Female in 'Under the Skin' A casual viewer might assume that if you've seen one ...

The unusual specimen raised eyebrows because it appeared capable of causing levitation. An official investigation has not ...

Scientists suggest the first alien signal we detect could be a desperate cry for help from a fading civilization.

For decades, the search for extraterrestrial intelligence has been defined more by silence than discovery, but that balance may be starting to shift. As new telescopes, algorithms, and theoretical ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

We've all grown up dreaming of aliens landing on the Earth or laser beaming across the sky; well, either way, it's sci-fi and ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

A casual viewer might assume that if you've seen one alien movie, you've seen them all. But that couldn't be further from the truth, as filmmakers throughout cinematic history have used these ...