Astronomers discover ring around dwarf planet Haumea
It's the first time a ring structure has been identified around an object beyond Neptune.
Haumea, which was officially discovered in 2005, has an unusual egg-shaped structure, which it gets from having such a high rate of spin. This stretches it out, making it more oblong than spherical. It is one of five recognised dwarf planets, along with Ceres, Pluto, Eris and Makemake.