HOMESTUCK IS REAL: Scientists have found Alternia

“GJ 1214b is like no planet we know of… A huge fraction of its mass is made up of water.” 

“But GJ 1214b, which is located 40 light-years from Earth in the constellation Ophiuchus (The Serpent Bearer), is something new altogether, researchers said.”

”GJ 1214b probably formed farther out from its star, where water ice was plentiful, and then migrated in to its current location long ago. In the process, it would have experienced more Earth-like temperatures, but how long this benign phase lasted is unknown, researchers said.”

This water planet apparently went through a phase of being mostly warm water before all life died due to  unstable conditions.