What is 1 light year. Write its value.
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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. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.
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The distance travelled by light in one year is called one light year. It's value is 9.4607 × 10 raised to power 12
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