From a Planck length to the entire universe this Flash graphic allow you to zoom in and out showing relative sizes of objects in our universe. Clicking on one gives you more information on that item. For example: “Pluto used to be a planet, but now it’s not. Why do people feel sympathy for it? It has no feelings. And if it did, why would it care about what the people way over on Earth though about it? On another note, Pluto’s official name is now “134340 Pluto” because it is a dwarf planet.”

I’ve posted two videos of the graphic on my blog at http://www.joshuahowe.com/2012/03/scale-of-universe-2-awesome-interactive.html

View Link [apod.nasa.gov]