Start Me Up! J-2X Rocket Test

NASA engineers conducted the first in a new round of tests on the next-generation J-2X rocket engine Feb. 15 at Stennis Space Center. The 35-second test continued progress in development of the engine that will provide upper-stage power for NASA's new Space Launch System, which will enable missions farther into space than ever. The SLS Program is managed at NASA's Marshall Space Flight Center in Huntsville, Ala.