Pluto – the exiled king of the outer Solar System Officially the largest resident of the Kuiper Belt, but in 2006 the International Astronomical Union brutally demoted it from “planet” to “dwarf planet” and the internet has never recovered from the heartbreak Right now, depending on where Earth and Pluto are in their cosmic dance, the distance between us swings from a mere 4.3 billion km to a soul-crushing 7.5 billion km. That’s 39 times farther than the Sun is from Earth. Good luck sending a postcard. BLACK HOLE. Follow for more space drama.