NASA’s Space Launch System moon rocket arrives at launch pad 39B Wednesday. Credit: NASA/Joel Kowsky
NASA’s towering 322-foot-tall (98-meter) Space Launch System moon rocket and Orion spacecraft arrived at their seaside launch complex early Wednesday after an overnight rollout from an assembly building at the Kennedy Space Center, moving a step closer to liftoff no earlier than Aug. 29 on an unpiloted test flight around the moon.