宇宙

我有一个蛮正经的读书群，里面卧虎藏龙。 前几天才知道有一个大哥是搞天文的，还参与了阿里原初引力波探测实验的建设（此处阿里是西藏的阿里地区，不是马云的阿里）。 大家佩服的五体投地。 说到天文，我想讲一讲我们宇宙的...

(This narrow-angle color image of the Earth, dubbed 'Pale Blue Dot', is a part of the first ever 'portrait' of the solar system taken by Voyager 1. The spacecraft acquired a total of 60 frames for a mosaic of the sol...