Can somebody please confirm that my answers are right? 1. At what time on earth did the light start from a galaxy 2 billion light years away? My answer was 2 X 10^9 years. This problem seemed too easy to be true. 2. How far is the nearest star in kilometers (about 1.3 par sec away)? My answer: 3.77 X 10^12 km Thanks for the help!