Board Thread:General Discussion/@comment-26797089-20150721140615/@comment-67.204.209.92-20150724161714

Well, if Sidewinder is a planet ENTIRELY made of ice, that would stand to reason that it is a water world, but, interestingly enough, as the core of one of these planets would always stay solid (rocky or otherwise) on the surface, depending on the mineral content of the ice, the force of gravity exerted on the ice and the exposure to the sun, the glaciers can and more likely will have melting periods, this is evidenced by planets we have already discovered (like that one rogue planet, GJ1214b, which is entirely made out of water, however, even without orbiting any star, and therefore not having any major source of heat, it has liquid stages). Even if that wasnt the case, Glaciers often act like tectonic plates when there is enough of it, the ice underneath melts due to the extreme pressure and allows them to glide about a few inches, or, in extreme cases, will simply continue to melt and eventually make an underground ocean (perhaps with the 'ground' above it thin enough for a Warthog dragging a two ton super soldier with it to break through the ice) leading to his death