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

A mysterious metal shard, once thought to be a piece of a UFO that crashed in 1947, has sparked years of wild speculation.

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...

Is it the invasion of the genome snatchers? Just in case the idea of aliens walking around in human skin suits wasn’t frightening enough. An outlandish study asserts that aliens might have abducted us ...

Aliens might be transmitting communications signals to each other across exoplanets, some astronomers think. Since these signals are likely sent as narrowband radio waves, we may now have a way to ...

FAYETTE COUNTY, Texas (FOX 44) — A traffic stop in Fayette County led to the discovery of “undocumented aliens” concealed inside altered hay bales, the sheriff’s office said. Sheriff Keith Korenek ...

A Border Patrol truck drives along the U.S.-Mexico border in front of a bollard-style fence. Agents say this type of fence gives them good visuals on activity going on across the border, while ...