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Webb telescope's largest study of universe expansion confirms challenge to cosmic theory
The findings offer a crucial cross-check for previous Hubble Space Telescope measurements of the universe's mysterious expansion
Published in The Astrophysical Journal, the research builds on Riess' Nobel Prize–winning discovery that the universe's expansion is accelerating owing to a mysterious "dark energy" permeating vast stretches of space between stars and galaxies. Although the Hubble constant does not have a practical effect on the solar system, Earth, or daily life, it reveals the evolution of the universe at extremely large scales, with vast areas of space itself stretching and pushing distant galaxies away from one another like raisins in rising dough. The standard model explains the evolution of galaxies, cosmic microwave background from the big bang, the abundances of chemical elements in the universe, and many other key observations based on the known laws of physics.
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