Guess which muscular action star supports the space program (video)

Dwayne Johnson (don't call him "The Rock"!) isn't an astronaut, but he plays one in the upcoming 3-D animated spoof Planet 51 and also praises our intrepid spacemen in this new public-service announcement for NASA. We got an early look at the new spot, which is meant to boost the public's awareness of NASA's more terrestrial benefits and is timed to the release tomorrow of Planet 51. Don't you love a movie star who supports the space program?
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