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A comment on If the universe is 13.8B years old, how can we see 46B light years away? (2018). Parent comment

Re:If the universe is 13.8B years old, how can we see 46B li... by recursivecaveat on Saturday December 07, 2019 @11:32AM (#21731089)
In essence, it's 'okay' for things to be FTL due to expansion of the medium. Imagine an ant crawling across a balloon as we stretch it. The ant could get some pretty fantastic apparent speeds relative to another ant because the medium is expanding, but step by step its moving at regular ant speed.
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Re:If the universe is 13.8B years old, how can we see 46B li... by cellular on Saturday December 07, 2019 @03:01PM (#21732252)
It is interesting to think of the opposite: space fabric is shrinking, so light needs to travel "slower" so as not to break causality. I know I know, it's not really slower because the fabric is shrinking.
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Re:If the universe is 13.8B years old, how can we see 46B li... by badrabbit on Saturday December 07, 2019 @03:40PM (#21732415)
But there is non space "fabric". There are interactions between qanta/matter but space is still space right?
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Re:If the universe is 13.8B years old, how can we see 46B li... by lonelappde on Saturday December 07, 2019 @07:35PM (#21733650)
It doesn't "need to", it just does. Causality is defined by the speed of light
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