Back in the 1980’s, a now-defunct magazine called Science Digest held a contest to name Planet X — the still-undiscovered world that astronomers believed might lie out beyond Pluto. One of the best ...
Pluto is no longer classified as a planet, it’s a dwarf planet, however, it still has five moons. Now astronomers say they have detected CO2 and other compounds on one of its moons for the first time ...
Planets, moons and other celestial bodies are named according to rules established by the International Astronomical Union (IAU). Pluto did not have any rules for naming surface features because, ...