Question

How many miles are in a light year?

Answer 1

Light second (ls) in miles = 1.862824 E+05 miles. So, light year = ls X 3600 X 24 X 365,256363 = 5.878728 E+12 miles..

Explanation:

I have only 7-sd approximation to ls. Using more sd ln ls, we could expect more correct sd, in the answer.