Astronomers have used the James Webb and Hubble space telescopes to confirm one of the most puzzling notions in all of physics, that the universe appears to be expanding at different speeds.JWST’s infrared cameras allow it to look at the universe in more precise detail than any telescope before it; Photo: NASA, ESA, CSA, J. Diego (Instituto de Física de Cantabria), B. Frye (University of Arizona), P. Kamieneski (Arizona State University), T. Carleton (Arizona State University), and R. Windhorst ...