Leave it to XKCD to whip up an awesome exoplanet infographic [click to embiggen]. I'd petition for Randall Munroe to have it made into a purchasable poster, but at the rate NASA's Kepler Mission is discovering planets beyond our solar system, it wouldn't be long before he had to update it — with way, way more planets.

The hover-over text, for those XKCD-ers in the know:

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Planets are turning out to be so common that to show all the planets in our galaxy, this chart would have to be nested in itself—with each planet replaced by a copy of the chart—at least three levels deep.

[XKCD]