Speculation about links among a handful U.S. scientists who have died or disappeared in recent years was largely confined to ...

Rare fossil finds show colossal octopuses were among the top ocean predators during the Cretaceous Period, according to a new ...

The ideas in this particularly juicy conspiracy theory were considered impossible when it was first proposed, but they are ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

With For All Mankind Season 5 now streaming on Apple TV and the show confirmed to end with Season 6, longtime viewers have been revisiting a persistent theory about where this alternate history saga ...

What if an alien civilization did not just exist somewhere in the universe, but actually reached Earth in the distant past? This video explored the ancient alien theory through the lens of the Fermi ...

For many fans, the behind-the-scenes strife of Alien 3 is as well-known as its on-screen excess: This is the movie that almost permanently pushed David Fincher out of Hollywood. Fincher inherited a ...

Nick Pope, former U.K. Ministry of Defence official and star on History Channel’s Ancient Aliens, has died at age 60. Pope was renowned for his work investigating UFOs, later becoming a prominent ...