in a vacuum, traveling at 3 million miles an hour, how long will it take to go one light year?
Light year =365 x 24 x 3,600 x 186,282 =5,874,589,152,000 miles.
5,874,589,152,000 / 3,000,000 =1,958,196.384 hours / 24 =81,591.516 days / 365 =223.5384 years.
