Question

what is light year ? with full explain? ​

Answer 1

Answer:

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The light-year is a unit of length used to express astronomical distances and is equivalent to 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. 

Unit of: length

1 ly in...: is equal to

Metric (SI) units: 9.4607×1015 m; 9.4607 Pm

Imperial & US units: 5.8786×1012 mi

Astronomical units: 63241 au; 0.3066 pc

Unit system: astronomy units

Symbol: ly

Answer 2

Answer:

Explanation is very simple hope you understand

Explanation:

The light-year is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometres (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).[note 1] 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).[2] Because it includes the word "year", the term light-year may be misinterpreted as a unit of time.[3]