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《宇宙苍穹》高清完整免费、宇宙苍穹在线高清观看免费、宇宙苍穹高清免费观看相关欧美综艺资源，请持续关注视川先长兮变A!
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2024-08-04
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豆瓣：宇宙苍穹