The habitability of natural satellites is the potential of moons to provide habitats for life, though it is not an indicator that they harbor it. Natural satellites are expected to outnumber planets b
An artist rendering of an exomoon with an Earth-like atmosphere with liquid water filling its craters and water clouds. It orbits a Jupiter-like gas giant exoplanet in the habitable zone, mostly white due to water vapor clouds (Class II, in Sudarsky's exoplanet classification)
Gliese 876 b is an exoplanet orbiting the red dwarf Gliese 876. It completes one orbit in approximately 61 days. Discovered in June 1998, Gliese 876 b was the first planet to be discovered orbiting a
An artist's impression of Gliese 876 b as an enormous Jupiter-like planet with a hypothetical satellite system.