最新研究：銀河系真的位於巨型空洞中！| 天文新鮮事 | Linvo說宇宙
Synopsis
不久前天文學家再次確認，我們的銀河系似乎真的位於一個巨大的宇宙空洞中。該空洞直徑超過10億光年，空洞內物質密度比宇宙 ...
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