The hot-fire test of a chilled-down solid-fuel rocket motor for NASA’s planned heavy-lift Space Launch System (SLS) on June 28 moved the big human-rated rocket a step closer to its first flight in ...
RS-25 hot fire on Jan. 22. Credit: NASA HOUSTON—An RS-25 engine has passed a follow-up hot fire test, clearing it for installation on the NASA Artemis IV mission’s Space Launch System (SLS). The RS-25 ...
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