New Evidence Confirms Universe's Standard Model
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Hubble constantPhys Org
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Science
Webb telescope helps refines Hubble constant, suggesting resolution to long-standing expansion rate debate

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New data from new James Webb Space Telescope suggests there may be no conflict in universe's rate of expansion.
New data suggests that our Standard Model of the universe is holding up, says UChicago Prof. Wendy Freedman .
Freedman 's latest calculation finds a value of 70.4 kilometers per second per megaparsec, plus or minus 3% .
Webb has four times the resolution of the Hubble Telescope .
More information: Wendy L. Freedman et al, Status Report on the Chicago-Carnegie Hubble Program (CCHP): Measurement of the Hubble Constant Using the Hubble and James Webb Space Telescopes , The Astrophysical Journal ( 2025 ). DOI: 10.3847/1538-4357 /adce78 Journal information: Astrophysical Journal Provided by University of Chicago .
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