🧵 Untitled Thread
Anonymous at Tue, 16 Jul 2024 14:36:31 UTC No. 16283530
If space and time are one and the same thing, then why is space expanding while time isn't?
Anonymous at Tue, 16 Jul 2024 14:43:30 UTC No. 16283540
The FLRW metric can be written in conformally flat coordinates such that the scale factor applies to the time coordinate too.
Anonymous at Tue, 16 Jul 2024 15:14:05 UTC No. 16283573
who says it isn't?
Anonymous at Tue, 16 Jul 2024 15:15:18 UTC No. 16283576
>>16283530
Pretty sure time is expanding, if it weren't expanding how would it move
Anonymous at Tue, 16 Jul 2024 15:19:09 UTC No. 16283580
>>16283530
They’re not the same intrinsically but that is one way to model it that gives pretty good predictive power.