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Renneder@sh.itjust.works

No, new measurements can't relax the Hubble tension - There are two different ways to measure the expansion rate of the Universe, and they don’t agree. And no, new measurements don’t help. (bigthink.com)

submitted 5 months ago by Renneder@sh.itjust.works to c/becomeme@sh.itjust.works

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[–] A_A@lemmy.world 2 points 5 months ago* (last edited 5 months ago)

When there is a supernova explosion, the atoms from that explosion are in a volume of space that expands but those atoms keep the same energy levels for their electronic transitions ... also, these energy levels corresponds to wavelengths of light which are the measuring sticks for the physicist.
TLDR : in expanding space, physicist's measuring sticks do not expand.