Question

A light year is defined as the distance light travels in one year. one light year is 9.46 x 10^12 kilometers. a galaxy is about 150.000 light years wide. about how many kilometers wide is the galaxy?

Answer 1

Below

Explanation:

9.46 x 10^12 km / ly * 150.000 ly = 1419 x 10^12 km = 1.419 x 10^15 km