Steven Spielberg's "Close Encounters of the Third Kind" is returning to theaters to celebrate the 40th anniversary of the acclaimed sci-fi film. Following a cryptic teaser dropped earlier this month, a full-length trailer for the theatrical re-release has made its way out online, AceShowbiz said.

Debuted via Entertainment Weekly, the ominous trailer shows three types of UFO close encounters as it takes cues from the movie's title. The first kind involves a sighting, the second kind is denoted by physical evidence, while the third kind is a direct contact with extraterrestrials.

"Close Encounters of the Third Kind" will be back in theaters in the U.S. and Canada for a one-week run beginning September 1. Sony Pictures has remastered the director's cut in 4K. The film will also screen in the Venezia Classici section of this year's Venice International Film Festival.

The movie was first released in December 1977, starring Richard Dreyfuss, Melinda Dillon and Francois Truffaut. It earned $303 million worldwide against its $20 million budget and was nominated for eight Oscars, winning best cinematography and a special achievement award for sound effects editing.