+An [Ice World](/wiki/ice_world) is a celestial body whose surface and much of its interior are permanently frozen, often found in the outer reaches of a star system. These frigid realms feature vast [Ice Sheets](/wiki/ice_sheet) and represent an [Extreme Environment](/wiki/extreme_environment), yet some may harbor subsurface oceans.
+## See also
+- [Ice Planet](/wiki/ice_planet)
+- [Snowball Earth](/wiki/snowball_earth)
+- [Cryovolcanism](/wiki/cryovolcanism)
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