[天文]你知道宇宙有多大吗？from SpaceRip

[视频作者] BambooMars

[视频时长] 25:3

[视频类型] 科学科普

https://www.youtube.com/watch?v=yaX4iGw-b_Y The universe has long captivated us with its immense scales of distance and time. How far does it stretch? Where does it end, and what lies beyond its star fields and streams of galaxies extending as far as tele