The SLS Five-Segment Solid Rocket Motor, that will launch NASA's Space Launch System and Orion spacecraft to deep space, undergoes a static test fire at the Orbital ATK facility in Promontory, Utah, U.S., June 28, 2016. Some 5.5 tons of propellant per second were burned by the booster with the goal of producing 3.6 million lb of maximum thrust, equivalent to the power of 14 Boeing 747s at takeoff. #sls #testfire #orbitalATK #deepspace #journeytomars