Astronomers have used the Webb telescope to observe Cepheid variable stars, ruling out one source of the prevailing "Hubble tension.”
The post Webb Telescope Measures Universe’s Expansion appeared first on Sky & Telescope.
Astronomers have used the Webb telescope to observe Cepheid variable stars, ruling out one source of the prevailing "Hubble tension.”
The post Webb Telescope Measures Universe’s Expansion appeared first on Sky & Telescope.