AdminRecent Observations James Webb Space Telescope (JWST) “This calls into question previous assumptions about the size of galaxies in the early universe. Until now, scientists have been puzzled by the apparent size of these ancient galaxies, as it seemed to contradict the standard model of cosmology. With its advanced infrared capabilities, JWST has shed light on this issue, revealing that some early galaxies were not as massive as originally thought.”
Understanding Misconceptions
Astronomers initially Galaxy It appears to be much larger than expected, signaling a potential crisis in our understanding of the evolution of the universe. The discrepancy stems from a miscalculation of the galaxy’s mass, in part due to the effect of a black hole. Contrary to their name, black holes can make galaxies appear brighter and larger due to the intense light emitted by gas falling into them. This effect had not been fully taken into account in previous observations.
Galaxy size correction
Astrophysicist Steve Finkelstein of the University of Texas at Austin and his team are now revising those estimates. They focused on 261 galaxies that are between 700 million and 1.5 billion years old after the Big Bang. By examining the infrared light captured by JWST, which is sensitive to cooler, lower-mass stars, the researchers were able to more precisely measure the actual sizes of these galaxies.
of Survey results The results show that, although some galaxies are indeed larger than originally thought, this does not contradict the standard model of cosmology.
Future impacts
Despite the revised numbers, JWST still reveals that there were more galaxies in the early universe than expected. This discrepancy could be because star formation rates were faster in the early universe than they are today. In the coming months, we will get more data to understand how these galaxies accumulated stellar mass and how they formed.
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