Ocean world
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An ocean world, ocean planet, water world, or water planet is a type of planet or moon that contains a substantial amount of water in the form of oceans, as part of its hydrosphere, either beneath the
Earth's surface is dominated by the ocean, which forms 71% of Earth's surface. Thus, Earth can be considered a water world, although not a fully oceanic world.
Diagram of the interior of Enceladus. Ice crust Global ocean Rocky core The southern polar region shows active jets.
A set of exoplanets of varying size containing water, compared with the Earth (artist concept; 17 August 2018)
Atacama Large Millimeter Array image of HL Tauri, a protoplanetary disk
LHS 1140 b
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LHS 1140 b is an exoplanet orbiting within the conservative habitable zone of the red dwarf star LHS 1140. Discovered in 2017 by the MEarth Project, LHS 1140 b is about 5.6 times the mass of Earth and
Ocean world
…been found to have densities consistent with large fractions of their mass being composed of water. Additionally, models of the massive rocky planet LHS 1140 b suggest its surface may be covered in a deep ocean. Although 70.8% of all Earth's surface is covered in water, water accounts for only 0.05% of Earth's…
Artist's impression of the exoplanet LHS 1140 b and its host star.
PIA21423 Surface of TRAPPIST 1f
Eso 1733s Artist's impression of merging neutron stars
Artist's impression of ʻOumuamua