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・ Ocean Park Historic Buildings
・ Ocean Park Hong Kong
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Ocean planet
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・ Ocean Prediction Center
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Ocean planet : ウィキペディア英語版
Ocean planet

An ocean planet, aquaplanet or water world is a hypothetical type of exoplanet which has a substantial fraction of its mass made of water. The surface on such planets would be completely covered with an ocean of water hundreds of kilometers deep, much deeper than the oceans of Earth.
==Formation==
Planetary objects that form in the outer Solar System begin as a comet-like mixture of roughly half water and half rock by mass. Simulations of Solar System formation have shown that planets are likely to migrate inward or outward as they form, presenting the possibility that icy planets could move to orbits where their ice melts into liquid form, turning them into ocean planets. This possibility was first discussed in the professional astronomical literature by Marc Kuchner and Alain Léger in 2003.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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