冥王星軌道以外應該至少還有 2 顆未知的行星
Saturday, January 24, 2015 by JSDN
數十年來,天文學家一直在爭議太陽系外圍到底有沒有昏暗的冥王外行星(trans-Plutonian planet)等待被發現。根據西班牙馬德里康普撕頓大學(Complutense University of Madrid,UCM)和英國劍橋大學(University of Cambridge)研究學者...
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Saturday, January 24, 2015 by JSDN
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