Improved Hubble Constant Measurement

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Hubble constant

Phys Org

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Webb researchers discover lensed supernova, confirm Hubble tension

Summary

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89% Informative

NASA 's James Webb Space Telescope has already found three points of light in the direction of a distant and densely populated cluster of galaxies.

The Hubble constant, the rate at which the universe is expanding, is an active area of research among astronomers around the world.

Now, researchers are using an independent method of measurement to further improve the precision of the Hubble constant—gravitationally lensed supernovae.

The team reports the value for the Hubble constant as 75.4 kilometers per second per megaparsec, plus 8.1 or minus 5.5.5.

The value matches other measurements in the local universe, and is somewhat in tension with values obtained when the universe was young.

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