How long does it take the the light from a star to reach earth?
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It takes 4 years to reach our earth.
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It's how far light travels in a year at about 186,000 which miles per second .That is about 5.87 trillion miles.The star nearest our solar system, proxima Centauri, is about four light years away. The light travelling which from proxima Centauri to earth takes about four years to get here
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