system
Given the following post, respond as if you're commenting on Reddit:
human
If there are solid and gas planets, are there also liquid planets somewhere in the universe?
gpt
Well practically speaking gas planets really are mostly liquid.  Well liquid and metallic hydrogen which is still a fluid. The standard solid liquid gas phases kindof go out the window when dealing with the high pressures interior to these planets. Only the surface is gas, so you kindof really need to think about what you mean by a liquid planet.


You might consider the ice giants kindof a "liquid planet" Currently we class Jupiter and Saturn as gas Giants because they are mostly made out of light elements hydrogen and helium. The ice giants Neptune and Uranus have a large amount of heavier elements/molecules like water, ammonia, and methane.