STENNIS SPACE CENTER, Miss. - NASA conducted a long-duration RS-25 single-engine test Wednesday, continuing its seven-part test series to support development and production of engines for future missions of the agency’s Space Launch System (SLS) rocket. Operators fired the Aerojet Rocketdyne engine for almost 11 minutes on the A-1 Test Stand. RS-25 tests at Stennis Space Center are conducted by an integrated team, including NASA, Aerojet Rocketdyne, and Syncom Space Services, the prime contractor of Stennis facilities and operations. (Source: NASA/SSC, 04/28/21)