Enceladus, a moon of Saturn, and Europa and Ganymede, moons of Jupiter, are all thought to have saltwater oceans buried under icy shells. Dwarf planets Pluto and Ceres are also suspected of having ...

it is among a handful of known dwarf planets beyond the orbit of Neptune, which with the other so-called giant planets—Saturn, Uranus and Jupiter—all have rings. "Our discovery proves that ...

The Carnegie Institution for Science and the International Astronomical Union’s Minor Planet Center has announced the discovery of dwarf planet ... aphelion of 936 AU. All three of these worlds ...

As the gatekeepers to the Kuiper Belt, Charon and Pluto are a unique double dwarf planet system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

A blue atmosphere, smooth areas, and youthful mountain ranges - this dwarf planet is full of surprises. When NASA's New Horizons probe flew past Pluto in July 2015, the images it returned astonished ...