Poseidonal Subtype
Europan Type planet or moon. If the world is massive enough and experiences severe enough tidal stressing, the icy surface and mantle may be melted to a depth of hundreds of kilometers, and the world will be enveloped in a thick atmosphere. Surface ice will be present, but spotty, giant icebergs adrift on a global ocean. Life is almost always present, but rarely very advanced.
Appears in Topics
Development Notes
Text by John M. Dollan in his Planet Classification List
Initially published on 19 December 2001.