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A light year is a unit of distance. It is the distance that light will travel in one year.

There are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day. The year is 365.24 days long. Light travels at 186,000 miles per second, or 300,000 km per second. Just multiply all those numbers together.

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14y ago
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15y ago

a lightyear is the distance traveled by light in one year.

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Q: What is a lightyear?
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