After seeing Steven Spielberg's "Disclosure Day," check out these real-life accounts of strange aerial sightings.

Ancient Alien Origins is based on the premise that all religions have their roots in an alien invasion that happened thousands of years ago. According to the documentary, these aliens were ancient ...

Top 20 Best Alien Documentaries Welcome to WatchMojo, and today we’re counting down our picks for the most captivating documentaries and docuseries that cover the fascinating possibilities of visits ...