Question

explaining about light year ? in detail.
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Answer 1

Answer:

the distance in galaxy can't be measures by metres and kilometres so there the distance is measured by lightyears

Answer 2

Answer:

a light year is a unit of distance. it is the distance that light can travel in one year. light moves at a velocity of about 3,00,000 kilometre is second. so in one year it can travel about 10 trillion kilometre. mope p recisely , one light year is equal to 9, 500,000,0000,000 kilometres.