宇宙以光速膨胀吗？ChatGPT 的回答

The expansion of the universe is not characterized by a singular speed like the speed of light. Instead, it's described by the Hubble constant, which is a measure of how fast the universe is expanding in relation to distance. Distant galaxies are moving away from us at speeds proportional to their distances, meaning the farther away a galaxy is, the faster it appears to be receding from us.

This expansion speed can exceed the speed of light for sufficiently distant galaxies. However, this doesn't violate the theory of relativity, which states that nothing can travel through space faster than light. The key here is that the galaxies themselves are not moving through space at these high speeds; rather, it is the space between galaxies that is expanding.

所有跟帖： 

• 大意是，所谓宇宙膨胀，实质上是空间在膨胀。 -QualityWithoutName- ♂ (203 bytes) () 12/19/2023 postreply 19:43:30

• 宇宙膨胀与空间膨胀是等价的表达 -viBravo5- ♂ (0 bytes) () 12/19/2023 postreply 19:58:01

• 太好了，ChatGPT至少纠正了我的错误概念，膨胀速度 = 光速。刚准备拜它为师，忽又陷入更大的困惑。另起一贴。 -来罘- ♂ (32 bytes) () 12/20/2023 postreply 02:30:00

• 要真正懂这些, 得先去学数学, 否则是不会真正明白的。我的数学是文科的, 就是学了点统计, 看不懂精髓 -咲媱- ♀ (0 bytes) () 12/20/2023 postreply 09:31:32

• 看来此生无望了，可我不甘心。四处寻觅Wendy Freedman式的解释，只为尽量死个明白。 -来罘- ♂ (0 bytes) () 12/20/2023 postreply 10:47:13

• 当年不服气,还去学校数学系去听过课, 买了不少书, 可是发现太难了, 人的智力是有极限的, 真没法理解那些超级抽象的东西 -咲媱- ♀ (0 bytes) () 12/20/2023 postreply 12:19:08

• 你放弃是理智的选择。人各有长，没有必要以己之短搏人之长。我虽有好奇心，但不会为之皓首穷径。浅尝辄止，聊胜于无。 -来罘- ♂ (0 bytes) () 12/20/2023 postreply 13:27:44