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A comment on SpaceX’s Falcon Heavy rocket seems to be a hit with satellite companies. Parent comment
https://en.wikipedia.org/wiki/Reaction_wheel
Basically, an heavy enclosed wheel that you use a motor to spin. Because of the conservation of angular momentum, the rocket will spin in the opposite direction (more slowly, because it's (probably) heavier).
https://en.wikipedia.org/wiki/Reaction_wheel
Basically, an heavy enclosed wheel that you use a motor to spin. Because of the conservation of angular momentum, the rocket will spin in the opposite direction (more slowly, because it's (probably) heavier).