February 2, 2010, 9:43 am
Rendered in Neat Circles
by Henry Woodbury
Filed under: Charts and Graphs, Diagrams, Information Design, Visual Explanation
Popular Science links to another interesting information graphic on space exploration. This one, designed by Michael Paukner, illustrates the number of human-created objects orbiting Earth — and assigns responsibility:
You can view larger versions on Paukner’s Flickr page.
The title of my post comes from the Popular Science URL: see-space-debris-cloud-surrounding-earth-rendered-neat-circles. Ironically, this summarizes the problem with the visualization. Despite the attractiveness of the graphic, the neat circles show linear values by area, making precise comparisons completely impossible.
The donut shapes created by the overlapping circles also confuse comparison. Take a quick look at the darkest circles– that for space debris — around the United States and Russia. The United States is bigger, but by what order of magnitude? We see a lot more black — a thicker torus– but the actual ratio is just 1.2 to 1.
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