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Damn it Hubski, I have to go outside! Why are the polar caps surprising? Pluto is like Uranus in that the poles are in its orbital plane. I honestly did not expect polar caps for that reason. If anything, the pole that is lit up by the sun, I anticipated to have less ices on it, and a stronger methane and carbon monoxide signature in the shadowed part of the body. We already expected there to be methane and CO ices on the surface, but in an actual polar cap in the part of the globe in constant sunlight was something neat to see.