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The SpaceX Falcon Heavy is based on the Falcon 9 booster, which NASA is buying to deliver cargo to the International Space Station after the space shuttles are retired this summer. The rocket could also be a component for future Mars missions. | SpaceX
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SpaceX Aims to Put Man on Mars in 10-20 Years

SpaceX is aiming to put a man or woman on Mars in 10-20 years. Learn more about SpaceX's aim to put a man or woman on Mars in 10-20 years.

April 23, 2011
3:00 AM EDT