Question

Define 1 light year. Also write its relation with SI unit of length.​

Answer 1

Answer:

A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in a vacuum in one year. ... A light-year is equal to 9,460,730,472,580.8 km (about 9.461 Pm; 5,878,625,373,183.61 statute miles; about 63,240 astronomical units or about 0.3066 parsecs.

Explanation:

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Answer 2

Answer:

light-year or lightyear (symbol: ly) is aunit of measurement of length, specifically the distance light travels in a vacuum in one year. ... A light-year is equal to 9,460,730,472,580.8 km (about 9.461 Pm; 5,878,625,373,183.61 statute miles; about 63,240 astronomical unitsor about 0.3066 parsecs.