Coma Cluster Closest to Earth

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Hubble Space Telescope observations

Space

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Science

Hubble tension is now in our cosmic backyard, sending cosmology into crisis

Summary

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74% Informative

The Coma Cluster of galaxies is 38 million light-years closer than it should be.

The HubbleLemaître law states that the universe is expanding by 67.4 kilometres per second per megaparsec ( km/s/Mpc ) The other tactic is to go back in time, all the way to 379,000 years after the Big Bang .

Dark Energy Spectroscopic Instrument ( DESI ) will measure the redshifts of about 30 million galaxies spread across cosmic time to learn how dark energy is accelerating the expansion of the universe.

DESI is able to derive the Hubble constant based on predictions from both the early and late universe.

But DESI 's measurements of Hubble constant in the modern universe, using the brightness of type Ia supernova explosions in galaxies, still show the tension.

The Coma Cluster findings have been accepted for publication in The Astrophysical Journal .

Scolnic thinks that the Coma cluster findings have irreversibly deepened the mystery of the Hubble mystery.

He concludes that "the Hubble tension is now a Hubble crisis" The findings have a pre-print is available.

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