正在播放：宇宙苍穹
m3u8 · 3 集
mp4播放 · 3 集
剧情简介
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.
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采集时间2026-09-07 16:23:48
