Timeline for Why does space expansion not expand matter?
Current License: CC BY-SA 4.0
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| Jul 10, 2024 at 7:22 | comment | added | benrg | @Yukterez Einstein published a lot of things late in his career that aren't well regarded. That said, I think this paper is fine; they just construct a so-called swiss-cheese solution of GR, consisting of expanding FLRW dust with spherical voids containing Schwarzschild stars at their centers, and conclude correctly that the expansion has no effect on the stars. I wish they (and others) didn't call the expanding dust "expanding space" but there's nothing I can do about it. It's the matter that expands, not the vacuum. | |
| Feb 10, 2023 at 21:08 | comment | added | Edouard | Air making me "slightly" smaller than I'd be in a vacuum seems like an understatement, but I guess that an infinite divisibility of space would justify use of the adjective that I've shown in quotes, at least during the earlier part of the time that the material which the body that "I" currently am would subsequently be spending in that vacuum. (I'm trying, here, to understand Einstein's well-documented support for the concept of "zero-point energy" and a conception of aether, which I may have ignorantly neglected elsewhere on PSE.) | |
| Oct 1, 2019 at 7:59 | history | answered | benrg | CC BY-SA 4.0 |