The asteroid belt

Overview
The asteroid belt is between Mars and Jupiter. It holds a lot of asteroids. Some moons are asteroids, like Phobos and Deimos.

History
The asteroid belt was discovered in 1801. The first object that was discovered was dwarf planet, Ceres. At the time, the astronomer thought Ceres was just a comet, but it wasn't. More and more people found these objects. There were "planets." Pallas was discovered and Vesta too. Ceres is the largest of the asteroids and had a roundish shape. Other asteroids are small and sometimes have a weird shape. Over time, more of these "planets" were discovered. Some of them even have moons. They are now called minor planets, aka asteroids. But Ceres was a different thing. Instead of it being an asteroid, it was a dwarf planet.

Facts

 * The asteroid belt was first discovered. It was discovered a century and 29 years before the Kuiper Belt was discovered.