Disclosure Day, the upcoming sci-fi movie from director Steven Spielberg, revolves around a plot to prove that aliens exist.

The release of the film comes amid the release of numerous UFO files from the US government over the last few months.

Add Yahoo as a preferred source to see more of our stories on Google. Steven Spielberg poses with the animatronic puppet from ET at Carlo Rambaldi’s studio in April 1982 - Mark Sennet/Getty Images ...

Spielberg’s hotly anticipated new movie gives fresh impetus to a dilemma that has long captured the imaginations of filmgoers, scientists and the great director himself ...

Not every alien is trying to invade Earth, but if you're looking for the thrills and danger of an alien invasion, you can't ...

Forty years ago, James Cameron revolutionized the sci-fi world with one of the greatest sequels of all time. Alienscelebrates a milestone anniversary this year, and it still holds up just as well as ...

HBO Max just added the Alien movie special editions to celebrate Alien Day; here are all the major differences between the theatrical & director's cuts ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: 20th Century ...

From Star Wars to 'Rocky Horror Picture Show,' this list of the best sci-fi movies from the 1970s explores one of the genre's ...