宇宙苍穹已完结

p 　　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 一000 cars in a Coke can, and the comets in the Solar System equated to grains of sugar weighing half a ton p 。本视频《宇宙苍穹》由12306影视-播播影院m12306.com收集自网络发布。如果您喜欢12306影视-播播影院提供的

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