@[email protected]M to [email protected] • 4 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-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.com@[email protected]M to [email protected] • 4 months agomessage-square10fedilink
minus-square@FooBarringtonlink5•4 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 :)
minus-square@[email protected]linkfedilink1•4 months 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.