Question

The star Betelgeuse is 2,850 trillion kilometers away. What is its distance in light-years?

Answer 1

301.2 light years

Explanation:

`2850 trillion` km

`= 2850 X 10^12` km

`=2850 X 10^12/299792` light seconds (ls)

`=9806591237` ls, nearly

`=9806.6/(365.25 X 24 X 60 X 60)` light years (ly)

`=301.2` ly.