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If you stand still on earth and 1 second = 1 second, is there any significant difference in time dilation relative to an astronaut floating in space who is completely still? (ie, not pulled in any direction due to orbits of any kind? Is there any frame of reference in the universe that would allow an object floating in space to be completely at rest? (factoring in planetary, stellar, galactical orbits and the expansion of the universe?)
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