剧情
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.如果您喜欢中雄影视（chinesedreamkids.com）分享的《宇宙苍穹》，别忘了推荐给你的好友！
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