"Counting at the rate of one number per second, to count to a trillion takes 32,000 years, which is as much time as has elapsed since people first drew on cave walls." Neil deGrasse Tyson

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Diameter of Andromeda (closest large galaxy to the Milky Way)

Diameter of Andromeda (closest large galaxy to the Milky Way) (2.08 quintillion km)

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Link

Is That A Big Number? - The Book

Yes, there's now a book based on these numbers. Oxford University Press: July 2018.

Click here to learn more about it.

Click here for Podcast: Andrew Elliott interviewed for New Books Network.

http://itabn.tumblr.com/post/138631317782/this-website