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Aseyhe t1_j26nbd0 wrote

Reply to comment by TomDRV in How fast does the Milky Way spin? How far does Earth move through space in a year? by Sabre-Tooth-Monkey

> Hang on, if all motion is relative, why can't I pick an object moving in the direction I would like to travel at 99% of the speed of light, the travel at the speed of light relative to that, thereby traveling at 199% speed of light relative to my starting location.

See relativistic velocity addition

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