Question

what is light year ????
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Answer 1

Answer:

A light-year is defined as the measurement of length or the distance light travels in a vacuum in a year. One light-year is close to 6 trillion miles.

➛One light year is defined as the the distance travelled by light in one year in vacuum.

➛The value of one light-year can be numerically expressed in kilometres as:

One light-year, ly = 9.4607 × 1012 km

Explanation:

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