NASA biggest rocket: Space Launch System set for testing in 2018 (VIDEO).

NASA’s Futuristic New Rocket Could Take Us to Mars (Video)  

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Sept. 5 2014 1:26 PM

Megarocket

NASA’s ambitious Space Launch System will be ready for testing by 2018.

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Known as the Space Launch System, or SLS, the rocket will stand 400 feet tall when it’s finished and is designed for deep-space missions.

Dallas Jensen is a regular video contributor to Slate.

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