JWST's Puzzling Early Galaxies Don't Break Cosmology--But They Do Bend Astrophysics
The James Webb Space Telescope (JWST) has observed bright galaxies that stretch back to the early universe, which is puzzling because galaxies shouldn't have had enough time to become so massive.
Studies suggest that the unexpected girth of these early galaxies could be attributed to astrophysical explanations like earlier-forming black holes or bursts of star formation, rather than a flaw in our understanding of cosmology. [ more ]
'Overmassive' Black Holes Dominated Early Galaxies, Study Finds
Early supermassive black holes in ancient galaxies are smaller than those in our nearby universe but appear too big compared to the mass of stars in their host galaxies.
These early black holes were likely spawned by collapsing gas clouds and were more massive than their galaxies, but galaxies gained stellar mass over time. [ more ]
'Overmassive' Black Holes Dominated Early Galaxies, Study Finds
Early supermassive black holes in ancient galaxies are smaller than those in our nearby universe but appear too big compared to the mass of stars in their host galaxies.
These early black holes were likely spawned by collapsing gas clouds and were more massive than their galaxies, but galaxies gained stellar mass over time. [ more ]
A Discovery Near the Dawn of the Time Has Revealed Something Fundamental About the Universe
Researchers have found evidence that gas outflows from quasars can suppress the formation of new stars in the early universe.
The study used the Atacama Large Millimeter/submillimeter Array (ALMA) to observe a quasar moving away from Earth when the universe was less than a billion years old. [ more ]
'Overmassive' Black Holes Dominated Early Galaxies, Study Finds
Early supermassive black holes in ancient galaxies are smaller than those in our nearby universe but appear too big compared to the mass of stars in their host galaxies.
These early black holes were likely spawned by collapsing gas clouds and were more massive than their galaxies, but galaxies gained stellar mass over time. [ more ]