Variety reports that Sony Pictures Worldwide Acquisitions Group has picked up U.S. distribution rights for the CG-animated Planet 51.

TriStar Pictures will release the film, which features the voices of Dwayne Johnson and Jessica Biel, on Nov. 20, 2009.

The alien adventure comedy centers on an astronaut who lands on Planet 51 thinking he's the first to set foot on it. To his surprise, he discovers it's inhabited by little green people who live in a white picket-fenced world reminiscent of 1950s America. The film is produced by Ilion Animation Studios.

Justin Long, Seann William Scott, Gary Oldman and John Cleese round out the voice cast.

Ignacio Perez Dolset and Guy Collins are producing. Peter Graves, Michael Ryan and Jose Rodriguez executive produce.