Giorgio A. Tsoukalos talks about the Alien Astronaut Theory & the new episodes of "Ancient Aliens" on The History Channel.

The intriguing celestial object known as 3I/ATLAS has sparked debate over whether it is a natural comet or alien technology. Recent reports have consistently debunked the alien hypothesis, reaffirming ...

Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren't sure ...

Everyone loves a good alien invasion story, preferably one with city-sized ships and physics-defying tech. There's just one big problem with that. The Milky Way is estimated to contain 100 to 400 ...