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Emily Lakdawalla • Jan 22, 2016

xkcd: Possible Undiscovered Planets

Randall Munroe is a genius at disguising seriously educational infographics as funny jokes. Behold today's xkcd: "Possible Undiscovered Planets," a reference, of course, to yesterday's announcement of theoretical evidence for a possible, distant ninth planet. Visit the xkcd site to enjoy the mouseover text (use this link if you're on a mouseless device).

xkcd: Possible Undiscovered Planets
xkcd: Possible Undiscovered Planets From xkcd.Image: Randall Munroe

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