クリス・ハードウィックのインスタグラム(nerdist) - 11月1日 07時01分

More than 175,000 volunteers have been combing NASA data to find this hypothetical planet. We know it as a cold world roughly around the size of Neptune. This planet theoretically lives far beyond the Kuiper belt within the solar system’s outermost region.⁠
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[BIHAKUEN]UVシールド(UVShield)

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