NASA Challenge Invites Students to Help Design Journey to Mars Systems via NASA http://t.co/fTcU5JeKe1: NASA C... http://t.co/EEjFjYbBtT

NASA Challenge Invites Students to Help Design Journey to Mars Systems via NASA http://t.co/fTcU5JeKe1: NASA C... http://t.co/EEjFjYbBtT

— John Prieto (@prietoj) March 11, 2015

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March 11, 2015 at 03:51PM

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