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A comment on Why can’t I go faster than the speed of light?. Parent comment

Re:Why can’t I go faster than the speed of light? by iaw on Sunday September 12, 2021 @07:40PM (#28506202)
I asked this in physics when I first heard the twin experiment. The answer comes from more complicated relativity based on acceleration and depends entirely on which reference frame you meet in. If you travel back to earth you age slower, if the twin catches up to you they aged slower....

It's not intuitive but time actually warps and there is no true concept of "simultaneous" in a special relativity world.

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Re:Why can’t I go faster than the speed of light? by doctor_eval on Monday September 13, 2021 @12:00AM (#28507741)
> there is no true concept of “simultaneous” in a special relativity world

This did my head in. Wikipedia has a great explanation.

https://en.m.wikipedia.org/wiki/Relativity_of_simultaneity

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