Pluto's weird orbit was one of the main reasons why it got demoted to the status of a dwarf planet. Three things about its orbit make it an oddball among the planets: Firstly, it's highly inclined to the ecliptic. Pluto's inclination to the ecliptic is 17...

Astrum explores everything NASA's New Horizons saw and discovered in the Kuiper Belt around Pluto, Charon and Arrokoth (Ultima Thule).