what is a light year
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A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.
9.461 × 1015 metres
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Answer:
Explanation:
Astronomy.
A unit of astronomical distance equivalent to the distance that light travels in one year,
Which is 9.4607 * 10 whole power 12km.
(Nearly 6 million miles)..
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