Bellowing smoke and fire comes off of Orbital ATK’s Qualification Motor -1 (QM-1) test at a key firing last month, marking the path towards the debut launch of the Space Launch System (SLS). The five segment solid rocket booster came to life at the Promontory test site in Utah, concluding a long path to its big day, involving a major investigation – and subsequent solution – after the discovery of voids in one of its segments. #SLSFiredUp #NASA #progress #smokeandfire #OrbitalATK #rockets #space #exploration #JourneytoMars (Photo credit: Ian Cox)