Name the physical quantity related to the unit light year
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Light-year. The light-year is a unit of length used to express astronomical distancesand measures about 9.5 trillion kilometres or 5.9 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days).
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The physical quantity related to the unit light year is distance
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