English Planetary surface Cited by user Nsae Comp on 01 Sep 2021 A planetary surface is where the solid (or liquid) material of the outer crust on certain types of astronomical objects contacts the atmosphere or outer space.
English Hydrothermal vent Cited by user Headbomb on 03 Aug 2012 A hydrothermal vent is a fissure on the seafloor from which geothermally heated water discharges.