In 2006, the International Astronomical Union kicked Pluto off its planetary pedestal. In his delightful book How I Killed Pluto and Why It Had It Coming (Bookshop|Amazon) astronomer Mike Brown recounts the events leading up to the demotion of that...
In addition to the eight planets in our solar system, there are also more than a million minor planets, including five so-called dwarf planets, plus hundreds of thousands of asteroids. When an astronomer or amateur stargazer discovers one, they get...
