ufos

In a new report, Pentagon officials claim they lack evidence that UFOs are from worlds other than Earth.

"Superman" and possibly "Star Trek" are among the franchises uniting to stop the aliens from taking over the iconic island.

U.S. lawmakers called for an official assessment of UFO sightings in December, and the six-month deadline is up.

A clip of a mysterious spherical object hovers over the horizon, in footage released by a filmmaker who produces UFO documentaries.

Former Trump intelligence director John Ratcliffe told Fox News that more unexplained sightings of flying objects will soon be declassified.

Multiple people saw a strange blue light whiz over Oahu, Hawaii.

Three videos captured by U.S. Navy pilots show unidentified aircraft flying at hypersonic speeds.

UFO sightings during NATO war games in 1952 set the stage for the season finale of "Project Blue Book," the History channel's series about the U.S.' real-life UFO-hunting program.

Space.com sat down with Sarah Scoles, author of "They Are Already Here: UFO Culture and Why We See Saucers."

Read an excerpt from the new book "They Are Already Here: UFO Culture and Why We See Saucers" by Sarah Scoles.