A mega-Earth or massive solid planet is type of terrestrial exoplanet that is very massive and dense — more massive than super-Earths. The term "mega-Earth" was coined in 2014, though it remained an informal category until a quantitative definition was proposed for it in 2026.
A mega-Earth or massive solid planet is type of terrestrial exoplanet that is very massive and dense — more massive than super-Earths. The term "mega-Earth" was coined in 2014, though it remained an informal category until a quantitative definition was proposed for it in 2026.
Source: Wikipedia "Mega-Earth" · CC BY-SA 4.0
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