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What is the unit of a light year? - Quora
SOLVED: d. The speed of light at about 1.86x105 milsec= Define a light year: 5 b. Length of a light year in miles (scientific notation) Length of a light year in km (
How Far is a Light Year? | The Fastest Thing in the Universe
SOLVED: How do Calculate light years to earth years
Light-Year | National Schools' Observatory
Light Year
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How long does it take sunlight to reach the Earth?
File:1e16m comparison 10 light years sirius.png - Wikimedia Commons