What if technosignatures and biosignatures are not the only ways intelligent alien life can make itself apparent?

Alien experts claim powerful extraterrestrial life exists in the universe, which is beyond the control of any government — and could wipe out life on earth. Following Tennessee Rep. Tim Burchett’s ...

Letters: Readers offer their explanations for the absence of hard evidence for extraterrestrial civilisations, in response to an article by Adam Kirsch ...

Even as the Trump administration continues to declassify government files on UFO sightings, the official position of the United States remains that no evidence has emerged proving the existence of ...