This is a penny. We all know how big it is, how much space it takes. But what about a thousand pennies? A million pennies? Can you visualize it?
The MegaPenny Project might be able to help you realize just how big some numbers (like a billion) really is. For example:
This is a thousand pennies.
This is a million pennies.
This is a hundred million pennies.
And this is ten billion pennies.
Pretty cool, huh?