Astronomers may have solved one of Webb's first puzzles


Scientists noticed that the early galaxies of the universe did not conform to the laws of the universe almost immediately after pointing the James Webb Space Telescope towards them. These galaxies were only 500-700 million years old when they were viewed. They seemed to be too mature and massive for their age. In a piece for The New York Times

, two physicists wrote that it was like seeing parents and their children with their grandparents who were still children. “It’s crazy,” said Erica Nelson in a recent statement. She is an astrophysicist from the University of Colorado Boulder. You wouldn’t have expected the early universe to organize itself so quickly. The galaxies shouldn’t have formed.”

But a new study using computer simulations has shown that they don’t appear to be massive because of their infrared eye. Webb is run by NASA, European and Canadian space agencies. Scientists say that while a galaxy’s mass is usually reflected in its brightness, smaller, less developed galaxies can be just as bright due to irregular bursts star formation. SEE ALSO:

Webb telescope captures its largest images yet, and the results are majestic
A group of astrophysicists from Northwestern University were able to prove this without contradicting widely accepted cosmology theory. The computer experiment reproduced the same number bright galaxies that Webb observed. The research was published this week in

Astrophysical Journal Letters


“The key is to reproduce a sufficient amount of light in a system within a short amount of time,” said Guochao Sun, lead author on the study, in a statement. “A system does not need to be massive. If star formation occurs in bursts it will emit flashes. This is why there are many very bright galaxies. The James Webb Space Telescope discovered ancient galaxies that were initially thought to be extremely massive due to their brightness. Want more science or tech news delivered to your inbox right away? Sign up today for Mashable’s Light Speed Newsletter

. Looking farther in astronomy means looking backwards because light and other types of radiation takes longer to reach us. Infrared waves can penetrate clouds and gas that obscure the view of distant, dim light sources. NASA scientists once said that an infrared camera’s sensitivity was comparable to the ability to detect a bumblebee’s heat on the moon. These galaxies do not produce stars in a consistent manner like the Milky Way. Instead, they create stars irregularly. They have a rapid proliferation of stars followed by a stagnant period that can last for millions of years. Claude-Andre Faucher-Giguere is a professor of physics, astronomy, and cosmology at Northwestern University. It’s not clear why low-mass galaxy formation occurs in bursts. NASA released the first deep field image by the James Webb Space Telescope on July 11, 2022, at the White House.Credit: NASA / ESA / CSA

“What we think happens is that a burst of stars form, then a few million years later, those stars explode as supernovae,” he said in a statement. “The gas is thrown out, and then it falls back into the system to form new stars. This cycle of star formation is driven by this gas.” “

This might not occur in galaxies with a greater mass because their gravity is stronger. In this case, “supernovae are not powerful enough to eject the gas from the system when they explode,” Faucher Giguere explained. The gravity of the galaxy holds it together and keeps it in a stable state. “