If there are 1.5 ✕ 108 km in 1 AU, how many AU are in a light-year? (c = 3 ✕ 105 km/s) If there are 1.5 ✕ 108 km in 1 AU, how many AU are in a light-year? (c = 3 ✕ 105 km/s)
