Hubble Tension Disputed by Telescope
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cosmic expansionSpace
•James Webb Space Telescope adds to the confusing drama of Hubble tension
78% Informative
The James Webb Space Telescope 's observations of 10 nearby galaxies suggest the Hubble tension may not be real after all.
In 2013 , the European Space Agency's Planck mission measured the Hubble constant to be 67.4 kilometers per second per megaparsecs.
This is consistent with predictions stemming from the standard model of cosmology.
But measurements by a team led by Adam Riess of Johns Hopkins University , who have been using the Hubble Space Telescope to measure cosmic expansion using type Ia supernovas, beg to differ.
Hubble Space Telescope has sufficiently powerful resolution to identify Cepheids in other galaxies.
However, it is possible that low-mass stars very close to a Cepheid can be unresolved and end up blurring in with the light from the star.
More measurements with JWST of galaxies with type Ia supernovae will be invaluable for confirming the results.
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