Maybe a trivial question caused by my poor understanding of escape velocity definition. If the escape velocity is the minimum speed that a body has to have to escape from the gravity of another body without propulsion, and if the escape velocity of a Black Hole within the Schwarzschild radius is equal to the speed of light; in theory, if a spaceship would cross that border it would be able to return back, assuming it could provide continuous thrust to counterbalance the gravitational pull. This is true even if its speed is lower than the escape velocity. Is it a correct or am I missing something?
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