In trying to comprehend our universe, just how big is big? How far is far? This users guide to the cosmos will bring the incomprehensible down to a human scale such as Venus melting a tank, the density of a black hole compared to 1000 cars in a Coke can, and the comets in the Solar System equated to grains of sugar weighing half a ton.更多《草莓视频色版》在线播放免费、草莓视频色版高清免费观看、草莓视频色版全集在线观看相关欧美综艺资源，请持续关注喜迎秘境!
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2024-09-27
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豆瓣：草莓视频色版