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.
-96电影网免费提供综艺《宇宙苍穹》手机在线观看,综艺《宇宙苍穹》手机免费观看,综艺《宇宙苍穹》手机高清观看,综艺《宇宙苍穹》高清完整版免费在线观看Copyright © 2015-2020 All Rights Reserved
