NASA biggest rocket: Space Launch System set for testing in 2018 (VIDEO).
NASA’s Futuristic New Rocket Could Take Us to Mars (Video)  
Slate in motion.
Sept. 5 2014 1:26 PM


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


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.