A light-year (ly) is the distance light travels in one year (at speed of 2.998 × 108 m/s). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 × 108 km. 1 year = 3.156 × 107 s.
A) How many meters are there in 1.90 ly?
B) How many AU are there in 1.90 ly?
