Gonggong is a dwarf planet and a member of the scattered disc beyond Neptune. As of 2019, its distance from the Sun is 88 AU, and it is the sixth-farthest known Solar System object.

Feb. 15, 2024 — A team found evidence for hydrothermal or metamorphic activity within the icy dwarf planets Eris and Makemake, located in the Kuiper Belt. Methane detected on their surfaces has ...