Planet 51.

Name: Planet 51
Genre: Animation, Science Fiction, Comedy
Released: 2009-11-20
Duration: 86 min
Cast: Dwayne Johnson, Jessica Biel, Justin Long, Gary Oldman, Seann William Scott

This time, the human is the alien.

An astronaut lands on what he assumes is an empty planet and discovers a suburban alien society. A young local tries to help him get home while frightened authorities hunt for the visitor.

23%Tomatometer108 critics · Rotten Tomatoes

Checked Oct 19, 2026. About these scores

View film information

Why it’s a little special

Reversing the usual alien-invasion setup creates a playful way to discuss fear of outsiders.

BEFORE YOU PRESS PLAY

Know the story.
Know your little people.

Parental guidance suggested

US film rating

Military pursuit, weapons, experiments and capture threats feature. There are mild sexual references and other suggestive jokes.

Our notes are a starting point, not an age recommendation. G and PG films can still include intense moments. You know your family best.

BEHIND THE SCENES

The little details.

Directed by: Jorge Blanco
Starring: Dwayne Johnson, Jessica Biel, Justin Long, Gary Oldman, Seann William Scott, John Cleese, Alan Marriott, Freddie Benedict
Written by: Joe Stillman
Produced by: Juan Antonio Perez Ramirez, Peter D. Graves, Michael Ryan, Jose A. Rodriguez Diaz, Javier Perez Dolset, Albie Hecht, Patrick Meehan, Mercedes Gamero, Mercedes Rey, Stephen Margolis, Ricardo García Arrojo, Albert Martinez Martin, Ignacio Perez Dolcet, Guy Collins
Release date: November 20, 2009
Runtime: 86 minutes
Genre: Animation, Science Fiction, Comedy
Studio: Sony Pictures
Language: English

LIGHTS DOWN. SNACKS READY.

Where to watch.

Find a spot on the sofa. Pick your service.

All viewing options

Sony Pictures Core Amazon ChannelSubscription

United States · Checked Oct 19, 2026 via JustWatch. Availability and plans can change. Channels may require an extra subscription; ad-supported plans may have restrictions.