Ways to travel at nearly the speed of light

Re:Ways to travel at nearly the speed of light by ars on Sunday June 02, 2019 @01:37AM (#20073678)

What happens if both parties are moving? They start back to back, fly a distance, both turn around and meet.

Each should see the other as dilated, no?

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Re:Ways to travel at nearly the speed of light by p-schultz on Sunday June 02, 2019 @02:26AM (#20073843)

There is no difference between you moving with velocity X and the other party moving with velocity -X; or you moving with velocity 2X and the other party being stationary; or you being stationary and the other party moving with velocity -2X. There is no experiment you can perform that will tell the difference.

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Re:Ways to travel at nearly the speed of light by ars on Sunday June 02, 2019 @04:37AM (#20074254)

You missed the point that both parties accelerate, we are not talking about constant velocity here.

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