The agency performed a nearly 9-minute-long "hot fire" test of an RS-25 engine -- four of which will power the core stage of the Space Launch System megarocket -- at Stennis Space Center in Mississippi today (Aug. 13).
The agency performed a nearly 9-minute-long "hot fire" test of an RS-25 engine -- four of which will power the core stage of the Space Launch System megarocket -- at Stennis Space Center in Mississippi today (Aug. 13).
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