Astronomers are actively researching the Hubble constant, the universe’s expansion rate, using data from ground and space observatories. NASA’s James Webb Space Telescope has confirmed previous measurements by the Hubble Space Telescope using Cepheid variables and Type Ia supernovae. Researchers, led by Brenda Frye from the University of Arizona, are now using gravitationally lensed supernovae to improve measurement precision. Webb’s discovery of three new points of light in a distant galaxy cluster, named Supernova H0pe, has provided new insights. Initial analyses confirmed these points as an exploding star with rare qualities.

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