99爱中文字幕高清视频,亚洲国产精品无码久久秋霞,欧美第一特级黄片视频,欧美一区二区三区呻吟高潮

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.