Science, asked by skuber758, 5 hours ago

what is is a unit of lengh,defined as the distance that light travel in a vacuum in one Julian year?

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Answered by umeshkanna16

Answer:

Lightyear (symbol: ly), is an astronomical unit of length equal to just under 10 trillion kilometres (or about 6 trillion miles). As defined by the International Astronomical Union (IAU), a light-year is a distance that light travels in a vacuum in one Julian year.

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