简介： In trying to comprehend our universe, just how big is big? How far is far? This users guide to the 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《24小时日本在线WWW免费看》高清完整版在线、24小时日本在线WWW免费看无删减完整在线观看、24小时日本在线WWW免费看中文完整版相关欧美综艺资源，请持续关注时刻影院!详情
