This interactive animation is a modern version of the classic powers of ten video. It takes you all the way from the (estimated) outer reaches of the universe down to the length of a Planck. Somewhere in the middle, the animation let's you explore the nano-scale. Click on different objects as they zoom by to learn more.
Nano Content Map
Nanometer-sized things are very small, and often behave differently than larger things do.
Flash Animation Credit & Copyright: Cary & Michael Huang