How long would it take to walk a lightyear?

By Casey Frye, CCNN Writer

If you had to guess, what would you say is the fastest moving thing in the universe? A super-charged sports car whipping down the street? Nope, it’s not a car… nor is it a train, a plane, a jet, or even a rocket. It’s actually light! That’s right, scientists estimate that light travels up to 186,000 miles per second. In one year, light travels as much as 5.9 trillion miles. Imagine how long it’d take to walk 5.9 trillion miles! I mean hey, I’m a pretty fast walker, and I do love to hike, but I doubt the trip would be easy!

If you walked at a steady pace of 20 miles per hour, it would take 225 million years! That is, if there were no bathroom or lunch breaks. Maybe a bunch of Powerbars would save time right? Well, it would take about 2 trillion PowerBars to provide enough energy for the trip, so bring a big bag! The pack wouldn’t just be for the bars either. Since a pair of shoes only lasts for about 500 miles, it’d take 12 billion pairs of shoes to last the whole trip! Unless you don’t mind walking barefoot…

Featured image courtesy of Michael Matti on Flickr.