The%20dark%20markings%20resemble%20those%20seen%20at%20visible%20wavelengths,%20but%20the%20south%20polar%20cap%20(at%20the%20bottom%20of%20the%20picture)%20is%20less%20prominent%20as%20its%20ice%20absorbs%20at%20infrared%20wavelengths.%20The%20slight%20green%20color%20around%20the%20polar%20cap%20is%20a%20result%20of%20ice%20absorption.
