How big is the universe? How small/big are we compared to other things out there? How small is the smallest thing?

This is just one of the coolest thing out there. It's called "The Scale of the Universe." Check it out at http://htwins.net/scale2/

And it was made by a couple of under-15-year-olds. Cool, right?


It's Adobe Flash-based, by the way, so you might not be able to peruse it on certain devices. Here it is embedded, in case you don't to click a link and visit another site: