Harvard scientist Avi Loeb says humans are not at the cosmic top table and calls for full release of UFO data, arguing that proof of extraterrestrial visitors could force us to rethink our future.

It starts with a signal. Faint, strange, and unlike anything humanity has ever recorded. Within hours, it escalates into an event that changes the course of history as an alien arrival on Earth ...

The truth is out there — and late President George H.W. Bush apparently knew it — telling a federal official that an alien made contact with humans at a secretive New Mexico air base in 1964, ...

Add Yahoo as a preferred source to see more of our stories on Google. We humans have numerous scientific activities currently involved in the search for extraterrestrial intelligence (SETI). These ...

Declassified FBI files detail 1950s claims that aliens viewed humans as the lowest life form, revealing how US agents investigated extraordinary reports without confirming them.

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 ...