Like their earthly cousins, some of those peaks are covered in blankets of white. But the origins of these ice-like deposits are very different. And unlike the way winds tend to ride up over mountains on Earth, the winds on Pluto mostly travel downslope. That gas can saturate, condense, and then freeze directly on mountain peaks without any clouds forming. At lower altitudes on Pluto, there is no methane frost because there is too little methane for condensation to occur.