Light-Year
The distance that a photon of light travels in a year. It is an astronomical unit of length equivalent to just under 10 trillion kilometers (6 trillion miles). The exact length is ,460,730,472,580,800 meters
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The distance that a photon of light travels in a year. It is an astronomical unit of length equivalent to just under 10 trillion kilometers (6 trillion miles). The exact length is ,460,730,472,580,800 meters