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 intelligent extraterrestrial beings.

For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a discovery that turns out not to be real. Researchers have built entire

A new batch of declassified Pentagon UFO materials is fueling fresh public fascination — but files still do not confirm extraterrestrial life.