SpaceX is superb at reusing boosters, but how about building upper stages?
With the launch Friday and another Falcon 9 flight Monday (this one with a booster on its 15th mission), SpaceX has launched ...
Time1 个月
Space: Hoofs of Hydrogen
As its Atlas booster fell away, the Centaur’s own nozzles bloomed with a blue, barely visible flame: the high-energy signature of burning hydrogen. Up by the Bootstraps. Designed to hurl more ...