what is light year ?
kapilsharma3:
The light-year is a unit of length used to express astronomical distances.
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a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 million million miles).
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The distance travelled by light in one year is called light year.
1 light year = 365.25×24×60×60×3×10^8 m.
1 light year = 365.25×24×60×60×3×10^8 m.
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