太陽系に隠された「第9惑星」の正体とは？
Synopsis
太陽系の遥か彼方、暗闇の中に潜む未知の巨大惑星。天文学者たちはカイパーベルトで奇妙な重力異常を観測し、それが「見え ...
![[プラネタリウム] 太陽系に隠された「第9の惑星」…その驚くべき正体と行方](https://i.ytimg.com/vi/fwjVzgpfE_I/hq720.jpg?sqp=-oaymwEcCNAFEJQDSFXyq4qpAw4IARUAAIhCGAFwAcABBg==&rs=AOn4CLDHQwk4ldCAz71tH9bBiRf1RY1FWQ)
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