Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

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 ...

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

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

Nov. 20 (UPI) --NASA released images of the interstellar comet 3I/ATLAS flying past Mars and, based on the agency's observations, scientists expressed doubt that it is an alien spaceship. Space ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: @Mario Nawfal/X A blazing green fireball lit up the night sky over Moscow on October 27, sparking speculation about ...

The Pentagon released its fourth batch of UFO files Friday following President Trump’s declassification order, including ...