Satellite speed towards Earth equals its forward motion in orbit for stability. Halving orbit speed lowers orbit, doubling it raises orbit.
The speed at which a satellite falls toward Earth is equal to the speed at which it moves forward in orbit, resulting in a stable orbit. If a satellite's orbit speed is reduced by half, it would move into a lower orbit, closer to Earth. Conversely, if the orbit speed is doubled, the satellite would move into a higher orbit, farther from Earth.
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