mardi 30 décembre 2014

How do We Measure How Fast We're Going?

Probably stupid question.



If there's nothing stationary to compare our speed to, how do we determine how fast we're moving through the universe? Isn't it all relative to everything else? Could we be going 80% speed of light and not know it?





via International Skeptics Forum http://www.internationalskeptics.com/forums/showthread.php?t=286958&goto=newpost

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