Question

what is light year ​

Answer 1

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The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union, a light-year is the distance that light travels in vacuum in one Julian year

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Answer 2

$\mathfrak {\huge {\red {Light\: Year}}}$

A unit of length use for the auustronomical measurement for calculating distance between planets , stars etc.

eg. The dist. between sun and earth is 0.00001581 light year.

1 Light year = 9.461 × 10

(15) meters.