What is out there beyond our solar system? Are there little green men in flying saucers? Or Klingons waging war? The first step in figuring that out is knowing how many planets can be inhabited by life as we know it. This interactive graphic from National Geographic explores just that. And as it turns out, most of the exoplanets we have discovered are not habitable. But a few offer promise. If only we could warp on over and properly explore them.
Credit for the piece goes to John Tomanio and Xaquín G.V.