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List of nearest terrestrial exoplanet candidates
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List of nearest terrestrial exoplanet candidates : ウィキペディア英語版
List of nearest terrestrial exoplanet candidates

This list of nearest terrestrial exoplanets candidates contains possible terrestrial ("rocky") exoplanets at a distance of up to 50 light-years from the Solar System, ordered by increasing distance.
They may be composed primarily of silicate rocks and/or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun.
== Incompleteness of the list==

This list is incomplete, currently containing 26 exoplanets, 10 of which probably lie inside their star's habitable zone.
There are roughly 2000 stars at a distance of up to 50 light-years from the Solar System〔(【引用サイトリンク】title=Stars within 50 light years )〕 (64 of them are yellow-orange "G" stars like our Sun〔(【引用サイトリンク】title=G stars within 100 light-years )〕). As many as 15% of them can have Earth-sized planets in the habitable zones.〔(【引用サイトリンク】title=() Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics )〕
On November 4, 2013, astronomers reported, based on ''Kepler'' space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of sun-like stars and red dwarf stars within the Milky Way Galaxy. 11 billion of these estimated planets may be orbiting sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists.〔〔

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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