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.飞飞影院为您提供 执导的《宇宙苍穹》全集完整版免费在线观看,宇宙苍穹2014上映由 等主演。《宇宙苍穹》在线观看地址:https://www.feifei.pro/vod/34538.html 欢迎把《宇宙苍穹》网址推荐分享给身边的好友谢谢!