Renneder@sh.itjust.worksM to BecomeMe@sh.itjust.works · 30 days 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-square10fedilinkarrow-up118arrow-down11
arrow-up117arrow-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 · 30 days agomessage-square10fedilink
minus-squareFooBarrington@lemmy.worldlinkfedilinkarrow-up5·29 days 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 :)
minus-squareBeartotem@sh.itjust.workslinkfedilinkarrow-up1·26 days agothe wavelength increase. The frequency decrease. Red as a wavelength of 700nm while blue is about 500nm.
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 :)
the wavelength increase. The frequency decrease. Red as a wavelength of 700nm while blue is about 500nm.