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A comment on The cosmological constant is physics’ most embarrassing problem. Parent comment

Re:The cosmological constant is physics’ most embarrassing p... by ike77 on Tuesday February 02, 2021 @10:41AM (#26002238)
I don't get it?

If there is vacuum everywhere:

vacuum --- us --- vacuum --- galaxy --- vacuum

Why would galaxy go away from us? I expect that the vacuum on the left of the galaxy applies the same force on it as the vacuum on its right and thus should have a null net effect on its movement?

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Re:The cosmological constant is physics’ most embarrassing p... by cambalache on Tuesday February 02, 2021 @09:47PM (#26009998)
Imagine that space (well space-time) it is a single elastic band and you pull it by both ends, you will have a more or less uniform tension in the middle part of the band and yet everything is receding from you. Same principle here.

Using your same diagram

vacuum <---- us -----> <----vacuum----> <-----galaxy---->

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