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An alien civilization is invaded by Astronaut Chuck Baker, who believes that the planet was uninhabited. Wanted by the military, Baker must get back to his ship before it goes into orbit without him.


(original idea by), (original idea by) | 3 more credits »
3 wins & 4 nominations. See more awards »



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Cast overview, first billed only:
Neera (voice)
General Grawl (voice)
Lem (voice)
Skiff (voice)
Freddie Benedict ...
Eckle (voice)
Alan Marriott ...
Glar (voice)
Soldier Vesklin (voice)
Soldier Vernkot (voice)
Lewis Macleod ...
Additional Voice (voice)
Additional Voice (voice)
Additional Voice (voice)
Vincent Marzello ...
Additional Voice (voice)
Emma Tate ...
Additional Voice (voice)


Lem is just an average teenager working on getting the girl and furthering his career at the local planetarium - except that he's an alien. At least to U.S. astronaut Captain Charles T. Baker who lands on Lem's planet hoping for a quick flag plant and a hasty return to earth and his millions of screaming fans. But on this alien planet the media has tagged spacemen as brain-eating, zombie-creating monsters, causing Baker to run for his life and into Lem's house. Now it's up to the green native to get the clumsy astronaut back to his spaceship before military dictator General Grawl and mad scientist Professor Kipple manage to exterminate the Earthly visitor. Written by The Massie Twins

Plot Summary | Plot Synopsis


Right stuff. Wrong planet. See more »

Motion Picture Rating (MPAA)

Rated PG for mild sci-fi action and some suggestive humor | See all certifications »

Parents Guide:




| |



Release Date:

20 November 2009 (USA)  »

Also Known As:

Planeta 51  »

Box Office


$70,000,000 (estimated)

Opening Weekend:

$12,286,129 (USA) (20 November 2009)


$42,194,060 (USA) (5 March 2010)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

2.35 : 1
See  »

Did You Know?


Production lasted sixteen months, roughly half the amount of time it takes to make a Pixar movie. See more »


Skiff's braces disappear and reappear in different scenes. See more »


[first lines]
girl: I've never gone parking before. I'm really not that kind of a girl.
boy: Well, I'm not the kind of a guy who would go with *that* kind of girl.
girl: Why that's so sweet - I think.
boy: There's nothing to be scared of.
[as alien craft rears up in front of them]
See more »

Crazy Credits

There is an additional scene halfway through the end credits. See more »


References Attack of the 50 Foot Woman (1958) See more »


(Vocal and Instrumental versions)
Written by Julius Dixon and Beverly Ross
© 1958 by Edward B Marks Music Corporation
Used by Permission of Moncur Street Music Ltd On behalf of Anglo Pic Music Company Ltd
Lead Vocal Sophie Green
Backing Vocals Tamsin Hardy and Cat Scandrett
Arranged by Chris Cawte
Produced by Graham Walker
See more »

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User Reviews

Good movie - NOT a rip-off
20 March 2011 | by (United States) – See all my reviews

Please disregard RichardSRussell-1's review, I am not sure he watched the movie, at least not with very much attention. First, he states "humans as the bad guys" but the only human was the movie's good guy! The military general was the bad guy, and even a four year old could easily see that. Second, I'm not sure if he is familiar with movies playing on themes and paying homage to other movies, stories, and so forth. That's not ripping off, but that reviewer obviously can't even grasp that concept. Countless movies, perhaps most of them, will include scenes and lines deliberately intended to make reference other works – this is not plagiarism, it's paying homage! There has not been a single children's animated movie with this particular theme, not even close (at least no movie or major work). Yes, it is essentially a reverse E.T. and builds on many, many other movies that have come before. But the overall work is not a copy of anything else.

It's a play on the common movie theme, and popular attitude in the 1950's, that all aliens must be terrifying monsters and the civic paranoia and fear that follows the suggestion of an alien visitor. Given that, it *has* to copy themes and images and possibly even lines from other movies. That's the whole point.

Having seen almost every kid's animated movie out there, I found this movie to be very enjoyable and I loved seeing it. More importantly (at least if you're a parent) my kids loved this movie, and they don't like every kid's movie. It may not be the greatest movie of all time, but I would definitely recommend it and a great watch.

4 of 5 people found this review helpful.  Was this review helpful to you?

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