Eli5 full stop/standstill/all stop in space

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Is it really possible for a spaceship to stand still and turn off all engines and just be idle in one exact spot in space like it happens in particular famous tv series etc? Wouldn’t the ship just continue floating away/moving on its own until you turn the engines back on?

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Anonymous 0 Comments

If to ships were close together and had their velocities in sync, they would appear to from either that the other was stopped. Movement can only be judged in reference to something. An astronaut that lets go of a ship will not have their velocity in sync with the ship because the act of letting go will cause it be different. Unless the astronaut has a suit with propulsion they will then not be able to catch back up with the ship.

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