A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

Science fiction stories about “alien” invaders are often political allegories for anxieties around immigration. Now, a government website depicts non-citizens as extraterrestrials.

The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common alien theories, explained. This voice experience is generated by AI. Learn ...

NASA administrator Jared Isaacman says declassified UAP files show real unexplained phenomena but no alien bodies or crashed ships have been found.

Steven Spielberg's new film “Disclosure Day” explores extraterrestrial life and its impact on religion. UFOs, now also called UAPs, are gaining mainstream attention.

The White House launched a website teasing new information on extraterrestrials this week, but it actually delivers immigrant arrest data.

Here's a rundown of 21 celebrities who believe aliens are real, and what they've said about our extraterrestrial neighbors. "It’s my first film that will be considered science fiction that I do not ...

Astrophysicist Neil deGrasse Tyson has a blunt request for the government as the Pentagon rolls out the highly anticipated ...

The Donald Trump administration has released numerous files about reported UFO sightings as well as bizarre claims and reports about the surface of the Moon ...

If you enjoyed Steven Spielberg's hit 'Disclosure Day' starring Emily Blunt, we suggest you watch these great UFO sci-fi movies ...

The trip had all the makings of a boring car ride—until the couple saw mysterious lights approaching from the sky.

Add Yahoo as a preferred source to see more of our stories on Google. Illustration by Alberto Mier/CNN When the Trump administration registered the domains Aliens.gov and Alien.gov in March, UFO ...