official news from : https://bit.ly/2QkyIbY
NASA completed the sixth of 12 scheduled RS-25 engine certification tests in a critical series for future flights of the agency’s SLS (Space Launch System) rocket as engineers conducted a full-duration hot fire Jan. 27 at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The current series builds on previous hot fire testing conducted […]
Ghost Nasa News 