One problem with depicting the solar system in an information graphic is that the enormous sizes and distances are hard to grasp. The usual solution is to use logarithms to compress things, but these can be hard to decipher, and sometimes it’s just better to show things to scale. Here’s an elegantly minimalist graph that shows the planetary diameters and distances (using two scales, though—otherwise you’d need a somewhat wider monitor), created by someone identified only as “Brian0918”.

Practically every pixel is data, and even the x axis could be grayed out or dropped entirely, giving an unsurpassable data/ink ratio (which would also help Pluto show up).

The problem element here is the sun, which is so gigantic it swamps everything else. If we were to eliminate it, or just show a chunk, the graphic would become much more concise. I’ve done this below; note the two scales, implicit in the original but I think necessary here—one is five thousand times the size of the other.
 

That version’s OK for print, but for the web one needs slightly more contrast and more solid typefaces.
 

The other solution for dealing with scale is breaking the graphic into chunks and recalibrating the scale by a sensible amount in each. These comparisons do this (note the common reference object in each successive picture), and use lovely 3D depictions as well, letting us go beyond the solar system to compare our sun with other stars.

References: Wikipedia has Brian0918’s chart: if anyone has more information on its origins, please leave a comment. The models were found via BoingBoing at Rense.com, which goes to show there are jewels in dross on the Web, but I don’t know the site they were taken from originally. And a practical activity that communicates the scale of the solar system to kids is the Earth is a Peppercorn.