Question

1. What is a light year? The distance between the Earth and the Sun is 150 x 10^6 km. Express this distance in light years​

Answer 1

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. More precisely, one light-year is equal to 9,500,000,000,000 kilometers.

Explanation: