Images of distant galaxies seen through NASA’s James Webb Space Telescope (JWST) represent a challenge because they could test the understanding of cosmology, said Associate Professor of Astronomy at the University of Texas Mike Boylan- Holchin.
The researcher developed a study in which he indicates that the candidates for the largest massive galaxies that appear in the JWST observations seem to be “at the limit” of the stellar mass density number established by the cosmological model of dark matter. existing cold Lamba.
The galaxies that astronomers managed to visualize between 500 and 700 million years after the Big Bang appear to be much more massive than they should be if the aforementioned cosmic model is correct. In this sense, Boylan said that, “if the masses are correct, then we are in unknown territory, we will need something very new about the formation of galaxies or a modification of cosmology.”
He also added that “one of the most extreme possibilities is that the universe was expanding faster shortly after the Big Bang than we predict, which would perhaps require new forces and particles.”
Source: Sputnik
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