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Old September 20 2012, 03:13 PM   #50
The Green Mushroom
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Location: United States
Re: Warp Drive May Be More Feasible Than Thought, Scientists Say

newtype_alpha wrote: View Post
So when it arrives, it's clock indicates that perhaps a day has passed
No, nearly a year has indeed passed. From your point of view, EVERYONE ELSE seems to have slowed down.
Except that a journey of one light year at .9999c or something to that effect would seem to take a day. In fact you throw enough nines after the decimal point, a person could travel to anywhere in the galaxy and come home in what seems like a day to him. Obviously he will arrive home thousands of years later, but to him everything else in the universe aged millennia in the blink of an eye.

While nowhere near light speed, the GPS satellites are precise enough and moving fast enough that their data needs to be adjusted for the fact the clocks on a satellite are moving slower than the clocks on the surface of the Earth.
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