- 正在播放《宇宙苍穹》第03集 - 线路一节点
- 提醒不要轻易相信视频中的任何广告，谨防上当受骗
- 技巧如遇视频无法播放或加载速度慢，可尝试切换播放线路
剧情：
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.
