Is Pluto a Binary Planet?
A few years ago Pluto suffered the public humiliation of being demoted from being a planet, but perhaps things are looking up for the little guy: Last week a fourth moon was discovered to be orbiting around Pluto and Charon which is starting to make some folks feel that Pluto may in fact be a binary planet. Although there is still a larger debate on where to draw a line between double-planet and a planet–moon system, so poor Pluto may have to wait a bit longer…