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主題: 彗星生存曲線 bortle survival 作者: peter 於 2023-08-22 13:48:16 彗星生存曲線
https://earthsky.org/astronomy-essentials/bortle-survival-limit-for-comets/ https://www.facebook.com/photo/?fbid=700742702067209&set=a.419550426853106 (https://scontent.ftpe7-1.fna.fbcdn.net/v/t39.30808-6/367727669_700742698733876_5804777520519322622_n.jpg?_nc_cat=106&ccb=1-7&_nc_sid=49d041&_nc_ohc=a7OBDmtaRQkAX__rQUd&_nc_ht=scontent.ftpe7-1.fna&oh=00_AfAKW_JwzBnlmntQA2QaGe06rfFjbtZ-o2xbVeKSedEDbw&oe=6502F9D7) https://familystar.org.tw/index.php?option=com_smf&Itemid=45&topic=38280.new#new |