Pluto and Charon
Credit: NASA on The Commons
The International Astronomical Union has demoted Pluto to “dwarf planet,” leaving the solar system with only eight “classical” planets. There are now three categories of objects in our solar system: Planets, Dwarf planets, and the not so very poetic Small Solar System Bodies. The last seems to be a catch-all for everything that is not the Sun and does not fit in either of the first two categories.
red paper boat 