| http://www.w3.org/ns/prov#value | - The search for life elsewhere in the universe has been guided by this fact, largely focusing on aqua planets" with a lot of liquid water on their surfaces.These worlds could be terrestrial planets largely covered with oceans, such as Earth, or theoretical ocean planets" completely covered by a layer of water hundreds of miles deep, somewhat like thawed versions of Jupiter's icy moon Ganymede.
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