Powers of 10 interactive. At least somehow, because this approach is much more graphical. Found on the page of camera-manufacturer Nikon, this site shows you scales of things in relation to each other - from the smallest speck of matter (atoms and smaller) to the largest planets and far beyond. Explanatory graphics will give you a real idea of your place on the planet - or indeed the universe.
Goto Universcale

And if you have never seen “Powers of Ten” by Ray and Charles Eames, please watch it now!

Worldprocessor is an ongoing project by Ingo Günther, an artist who obviously fell in love with globes. Since 1988 he has produced more than 300 globes showing different types of information. He gatheres geosocial and scientific data from newspapers and NGOs and maps them onto standard 12-inch globes. The result is “part infographic, part networking diagram, part humanistic commentary”.

Without much explanation, let me I introduce Mr Tufte as one of the fathers of information design. His work, his collections of diagrams and rules for successful data visualization has been very influental. Check out his homepage and his posters and famous books, in which he shares his expertise in the analysis and critique of information graphics and statistics.