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Kepler-438b
Kepler-438b (also known by its Kepler Object of Interest designation KOI-3284.01) is a confirmed near-Earth-sized exoplanet, likely rocky, orbiting within the habitable zone of the red dwarf Kepler-438, about from Earth in the constellation Lyra.〔〔 The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 January 2015.〔 It is the most Earth-like exoplanet known to date. ==Confirmed exoplanet== Kepler-438b is a near-Earth-sized exoplanet with a radius 1.12 times that of Earth. The planet orbits the red dwarf〔 Kepler-438, a star considerably smaller and cooler than the Sun, once every 35.2 days.〔〔
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「Kepler-438b」の詳細全文を読む
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