Harvard astrophysicist Avi Loeb examines Pentagon UFO files, urging scientific investigation into unexplained anomalies. He suggests that even one non-human technology discovery could be historically ...

The third known visitor from another star system, Comet 3I/ATLAS, has been racing through the Solar System with just enough weirdness to ignite a familiar debate: is it natural or could it be ...

The popular history docuseries The Proof Is Out There returns to the History Channel with its season six premiere Friday, March 6 at 10/9c. During the season six premiere episode, a high-tech U.S.