教授也有，Liddle, Andrew (2015). An Introduction to Modern Cosmology. John Wiley.

自己买书去看，此书发布于2015年，作者是英国爱丁堡皇家天文台天体物理学家。

相关内容：4.4章，
What does it actually mean for the Universe to be infinite, as in the flat and open cases? ... the Universe is already infinite in size even at a finite time. It genuinely goes on forever in all directions.

Cosmologists often talk about a different concept to the entire, possibly infinite, Universe, namely the observable Universe.

https://www.mso.anu.edu.au/~charley/papers/LineweaverDavisSciAm.pdf
同样的文章科普版，经常提到，宇宙无限大的可能并没有被否认。

This ubiquity of the big bang holds no matter how big the universe is or even whether it is finite or infinite in size. Cosmologists sometimes state that the universe used to be the size of a grapefruit, but what they mean is that the part of the universe we can now see—our observable universe—used to be the size of a grapefruit


【 在 wst 的大作中提到: 】
: 靠谱的知识在学校，在图书馆，在教授那里，而不是在谁都可以发表推翻爱因斯坦理论的网络。
: 即使在网络找，也不要动不动拿贴吧，自媒体文章当支持你观点的宝贝到处找人辩论。高质量的网络资源有的是，学术期刊数据库有的是高质量文章可看。
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FROM 98.42.143.*