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Mega-Earth
A mega-Earth is a massive terrestrial exoplanet that is at least ten times the mass of Earth. Mega-Earths are substantially more massive than super-Earths (terrestrial and ocean planets with masses around 5–10 Earths). The term "mega-Earth" was first coined in 2014, when Kepler-10c was revealed to be a Neptune-mass planet with a density considerably greater than that of Earth.〔Sasselov, Dimitar (2 June 2014) (Exoplanets: From Exhilarating to Exasperating ), 22:59, Kepler-10c: The "Mega-Earth", (YouTube )〕 ==See also==
*Kepler-10c *K2-3d
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Mega-Earth」の詳細全文を読む
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