In the heart of baseball season, NASA completed its equivalent of a clean inning, successfully testing the third RS-25 flight controller for use on the new Space Launch System (SLS) deep space rocket. Engineers conducted a 500-second test of RS-25 Engine Controller Unit No. 5 on the A-1 Test Stand at NASA’s Stennis Space Center (NASAStennis) near Bay St. Louis, Mississippi, July 25, 2017. With this latest test, NASA continues to set the stage for deep-space exploration missions, achieving another milestone toward launch of the first integrated flight of SLS and the Orion spacecraft, known as Exploration Mission-1. Of course there is more to this story, learn more: nasa.gov/sls Credit: NASA #NASA #SLSFiredUp #NASAStennis #Stennis