国产欧美精品一区二区三区app,欧美人妻1区2区3区,av电影亚洲一区二区,久久国产乱子伦无码

返回

宇宙蒼穹

類型：歐美綜藝  地區(qū)：美國  年份：2014 

劇情簡介

　　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.