Classic public domain film, digitally preserved and free to stream forever.
War of the Planets (1966) is an Italian sci-fi adventure in which Commander Mike Halstead leads a space mission to investigate an alien signal, only to discover a hostile force that has been possessing human bodies and plans to use Earth as a base for interstellar conquest.
Starring Tony Russel, Lisa Gastoni, and Franco Nero. This film is in the public domain and free to watch, download, and share.