Renneder@sh.itjust.worksM to BecomeMe@sh.itjust.works · 3 months agoNo, 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.comexternal-linkmessage-square9fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1external-linkNo, 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.comRenneder@sh.itjust.worksM to BecomeMe@sh.itjust.works · 3 months agomessage-square9fedilink
minus-squareFooBarrington@lemmy.worldlinkfedilinkarrow-up0·3 months agoWhen space expands, everything inside is stretched, including light. When light is stretched, its wavelength decreases (= redshift). So you just measure how much lower the light frequency is than you’d expect :)
When space expands, everything inside is stretched, including light. When light is stretched, its wavelength decreases (= redshift). So you just measure how much lower the light frequency is than you’d expect :)