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Can you help with this conversion?

Asked by RandomMrdan (7436points) November 16th, 2010 from iPhone

It’s a matter of travel an speed and the time passed.

Hypothetically, if I left earth at the speed of light, and travelled for one year, and by the end of my year of travel I ended back at earth. How much time will have passed here on earth?

I recall something about time nearly stopping for anyone traveling at that speed, but only for the person going that fast. So the question is, how many earth years will pass compared to a single year of light speed travel?

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