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HD 69830 c is an exoplanet orbiting HD 69830. It is the second-closest planet in its system and likely to be a rocky planet, not a gas giant.〔 If it had formed as a gas giant, it would have stayed that way. ==References== 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「HD 69830 c」の詳細全文を読む スポンサード リンク
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