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People need to lear that light years is a measure of distance. : r/facepalm
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What is a light-year?
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Can you explain, what is a light year, in the most simple way? - Quora
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How long is a light-year?
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How long is a light-year?
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How long would it take for a human to walk one light year? - Quora
What Is a Light-Year? | NASA Space Place – NASA Science for Kids
