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RTAntarctic Polar Cap
 extraterrestrial geology
 Mars
 Moon
 North Pole
 polar regions
 South Pole
SNAs of 1993, term may be used for caps on Earth or on other bodies. From 1989-1992, it was restricted to polar caps of extraterrestrial bodies; North Pole, South Pole, Polar regions or Antarctic Polar Cap was used for the Earth. For Mars before 1993, also