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An object can maintain its constant velocity with no outside intervention needed.That happens, of course, if all friction is removed. In empty space there is no friction.My question is: How empty this "empty space" must be such that no friction acts on moving [at constant rate] object and therefore an object can maintain its constant speed with no outside intervention ?
So quantum fluctuations of empty space will actually slow me down, right?
The bias in the 3k background radiation as well as the overall matter density in space will. At least it will until you obtain the same speed as that frame wherein you will retain constant speed.
Let's imagine we remove all photons, even this 3k radiation as well. Then what is left? The true quantum vacuum?
Whatever is left after removing all photons and even the 3K background radiation, will still slow me down?