Question

Light year is
Light emitted by the sun in one year
The time taken by light to travel from sun to
earth
The distance travelled by light in free space in
one year
The time taken by earth to go once around the
sun

Answer 1

Answer:

I think it's a answer not a question .....

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 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.

Explanation:

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