Movie where guy is in space, figures out he's being cloned

No, not Oblivion! However, it came out the year before or maybe even two years prior to it. It's almost exactly the same concept. Guy is already in space....travels in these land vehicles and is supposedly on a mission to gather resources. Later in the movie he finds out that he's being cloned. It's a Pandorum/Europa Report type movie that I just can't remember.

thanks!

Moon

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My IMDb page

Mark is so fast!

http://www.imdb.com/title/tt1182345/

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yes, yes yes! thanks a ton.