The discovery of a mysterious interstellar object called "3I/ATLAS" and its transit through our solar system has set off all kinds of speculation about whether the fairly massive visitor could be some ...

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 ...

If we ever make contact with aliens, our best bet might be to say as little as possible. A recent study, which uses game theory to simulate the outcomes of different strategies for communicating with ...

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