A test version of the universal stage adapter for NASA's more powerful version of its SLS (Space Launch System) rocket arrived at Building 4619 at NASA's Marshall Space Flight Center in Huntsville, Alabama, on Feb. 22 from Leidos in Decatur, Alabama. The universal stage adapter will connect the rocket's upgraded in-space propulsion stage, called the exploration upper stage, to NASA's Orion spacecraft as part of the evolved Block 1B configuration of the SLS rocket.