SLS Engine Test Scheduled for Thursday Afternoon

The RS-25 engine fires up for a 500-second test at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. (Credit: NASA)

Thursday, April 4, 2:45 p.m. Eastern: RS-25 engine test. Live from Stennis Space Center, an engine for NASA’s Space Launch System rocket is fired up in a test stand. Watch it live.