Planet 51 poster

Planet 51 (2009)

Film · 1h 31m · Rated PG

Adventure, Animation, Comedy, Family, Sci-Fi

A cheerful astronaut lands on a 1950s-style alien world, sparking a whimsical, feel-good adventure.

Campy, with wholesome humor. A family watch at a measured pace. Emotionally it carries some weight.

Not on a US subscription service as of Oct 28, 2026.

Planet 51 parents guide

Nothing past what a PG promises: mild language and nothing scary.

Our estimate: fine from about 7. Rated PG.

Scare
Not scary
Jump scares
None noted
Gore
No gore
Violence
Some violence
Some fighting or peril.
Sex and nudity
None noted
Language
Mild
Mild words like damn, hell or crap.

How we rate: an AI reads what is known about each title and tags it 0 to 3; we check the tags against a hand-rated set and correct them by hand when readers tell us. Estimates, not a scene-by-scene review. Spot a mistake? Tell us.

What is Planet 51 about?

When Earth astronaut Capt. Chuck Baker arrives on Planet 51 -- a world reminiscent of American suburbia circa 1950 -- he tries to avoid capture, recover his spaceship and make it home safely, all with the help of an empathetic little green being.

Does it have a happy ending? (spoiler-safe)

Yes. It lands on a happy note.

Cast and crew

Directed byJorge Blanco
StarringDwayne Johnson, Seann William Scott, Jessica Biel, Justin Long, Gary Oldman, John Cleese

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Uses the TMDB API; not endorsed or certified by TMDB. Intensity, content, tone and pace tags are CouchRot's own.