What If the Universe Isn't Flat But a Giant Loop
Keywords:
If you got into a spaceship, and traveled long enough and fast enough, could you eventually loop back to where you started?
Assuming you don't accidentally collide with another planet or star, and ...
如果你坐上了一艘宇宙飞船,旅行的时间足够长,速度也足够快,你最终能回到你开始的地方吗?
假设你没有意外地与另一颗行星或恒星相撞,并且一路上没有黑洞吞噬你。
这是 WHAT IF,这是如果宇宙是一个循环会发生什么。
我们对宇...
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