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Methods of detecting exoplanets
Any planet has an extremely faint light source compared to its parent star. In addition to the intrinsic difficulty of detecting such a faint light source, the light from the parent star causes a glare that washes it out. For those reasons, very few of the extrasolar planets reported , have been observed directly, with even fewer being resolved from their host star.
Instead, astronomers have generally had to resort to indirect methods to detect extrasolar planets. At the present time, several different indirect methods have yielded success.
==Established detection methods==
The following methods have proved successful for discovering a new planet or detecting already discovered planet at least once:
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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