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NASA Conducts Hot Fire of RS-25 Engine
Blue Origin hauls massive New Glenn 1st stage to launch site with hot fire up next
Firefly Aerospace's new rocket engine spouts green flames in 1st 'hot fire' test (photo)
Hot fire: Ariane 6 ready to rumble
NASA tests new kind of Artemis moon-rocket engine in dramatic 'hot fire' test (video)
