Once out in space, the space shuttle needs to to keep going in the same direction at the same speed.

do nothing

Explanation:

Once out in space, the space shuttle needs to do nothing to keep going in the same direction at the same speed. Since there is no gravity or external force in the vacuum of space, the rocket will maintain the same direction and velocity until some external force is applied that changes these factors. In space rockets usually use nitrogen gas thrusters to control direction and rocket fuel for speed.

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this is a good question! i'll do some research and come back when i have the answer!