Question: what is the difference between miles and light years?
Answer: Light is the fastest-moving stuff in the universe. It travels at an incredible 186,000 miles (300,000 km) per second. ... Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).