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New JWST Data Explores 'Hubble Constant' Tension for Universe's Expansion Rate
"Scientists can't agree on the exact rate of expansion of the universe, dictated by the Hubble constant," a new article at Space.com reminds us: The rate can be measured starting from the local (and therefore recent) universe, then going farther back in time — or, it can be calculated startin...
Gravitationally lensed supernovas in the early cosmos the JWST is observing could provide a third way of measuring the rate, potentially helping resolve this "Hubble trouble." This investigation of supernova Hope began when Frye and her global team of scientists found three curious points of light in a JWST image of a distant, densely packed cluster of galaxies. The team noted a "high rate of star formation... more than 300 solar masses per year," according to NASA's statement: Dr. Frye:"Initial analyses confirmed that these dots corresponded to an exploding star, one with rare qualities.
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