Astronomers Discover Activity on Distant Planetary Object
Centaurs are minor planets believed to have originated in the Kuiper Belt in the outer solar system. They sometimes have comet-like features such as tails and comae - clouds of dust particles and gas - even though they orbit in a region between Jupiter and Neptune where it is too cold for water to readily sublimate, or transition, directly from a solid to a gas. Only 18 active Centaurs hav