"They shouldn't exist": James Webb Telescope captures bizzare galaxies at the end of our universe
The James Webb Space Telescope (JWST) has made an amazing discovery at the end of our universe. Scientists thought something like this "shouldn't exist".
NASA's spacecraft has captured three 12.8 billion-year-old "Red Monster" galaxies the size of the Milky Way that appeared a billion years after the Big Bang. According to the most acceptable cosmological model of formation - the Lambda Cold Dark Matter (LCDM) - these galaxies should not even exist, writes DailyMail.
The researchers call the three newly discovered galaxies Red Monsters because of their gigantic size and high dust content, which gives them a distinct red color in telescope images.
JWST was able to detect the existence of these galaxies for the first time thanks to the unique capabilities of its Near Infrared Camera.
Source: NASA
The LCDM argues that the first galaxies to form in the universe did not have enough time to become so massive.
"Finding three such massive beasts among the sample poses a tantalizing puzzle. Many processes in galaxy evolution have a tendency to introduce a rate-limiting step in how efficiently gas can convert into stars, yet somehow these Red Monsters appear to have swiftly evaded most of these hurdles," said study co-author and University of Bath extragalactic astronomer Stjn Wuyts.
According to the scientists, this is not the first time the Webb Telescope has spotted "impossiby large" ancient galaxies. And this has led astronomers to question their understanding of how early worlds were formed.
The JWST 2023 survey found six galaxies that are 100 times more massive than they should be.
Source: NASA
Until now, galaxies were thought to form within vast halos of dark matter, the gravity of which traps gas and forces it to form gravitational structures. Typically, only 20 percent of this gas turns into stars and galaxies. Therefore, galaxies take a long time to reach enormous sizes.
However, the Red Monsters have challenged this belief. The researchers concluded that in order for these galaxies to reach their size, they must form stars almost twice as fast as those that formed later in cosmological history.
"Our findings are reshaping our understanding of galaxy formation in the early universe," said Mengyuan Xiao, lead author of the study and a doctoral student at the University of Geneva in Switzerland.
To understand this cosmological mystery, further research on these anomalous galaxies using the unique capabilities of the JWST is needed, experts emphasize.
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