Sep 21, 2008

How long is a light year?

Today my friend and I were having a conversation and we described someone as being "light years behind us"...then it occured to me, how long is a light year? In my quest to be fully knowledgable in the insults I throw towards people I looked up a light year and figured out this:

How Long is a Light-Year?
The light-year is a measure of distance, not time. It is the total distance that a beam of light, moving in a straight line, travels in one year. To obtain an idea of the size of a light-year, take the circumference of the earth (24,900 miles), lay it out in a straight line, multiply the length of the line by 7.5 (the corresponding distance is one light-second), then place 31.6 million similar lines end to end. The resulting distance is almost 6 trillion (6,000,000,000,000) miles! be light years behind someone is even more hilarious to me because I can say with confidence that you're not only light years behind me, but technically 6 TRILLION miles! So, you're officially losing the race and should probably call it quits! :)
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