USA:  Four of the oldest galaxies currently known have been discovered by NASA's James Webb Space Telescope (JWST). Light from these galaxies has been reaching Earth for more than 13 billion years,

According to research, and they were formed when the universe was only 350 million years old. To understand the first generation of galaxies, it is important to understand these findings.

The Webb Telescope has done unprecedented space exploration since it began operations. What is interesting about the most recent web searches is that the galaxies are thought to be part of a time frame known as the "epoch of reionization" during which the first stars are thought to have formed. After the "Cosmic Dark Ages", this era began.

Also Read: Apple set to open its first official retail store in India soon

Due to the expansion of the universe, light from distant galaxies has been traveling for so long that its wavelength has become longer. Redshift is the term for this bending of light.

In other words, the further the light travels, the more the red end of the electromagnetic spectrum is "seen" to shift towards it. This type of infrared light has been a focus of Webb's design.

Four galaxies—ZES-GS-Z10-0, ZES-GS-Z11-0, ZES-GS-Z12-0, and ZES-GS-Z13-0—were discovered with extremely redshifts. According to research, galaxies formed between 300 and 500 million years after the Big Bang.

Also Read:  Australia bans TikTok from federal government devices

As a point of comparison, these galaxies were formed when the universe was only 2% of its present age, or about 13.8 billion years old.

The fourth galaxy, JADES-GS-z13-0, formed 320 million years after the Big Bang and is the most distant of the four. According to Stéphane Charlot of the Astrophysics Institute of Paris, this is the largest distance ever measured by astronomers.

The Hubble Space Telescope previously discovered JADES-GS-z10-0, and Webb's observations confirm its existence. This galaxy emerged 450 million years after the Big Bang.

It turned out that the four galaxies were "very low in mass", each weighing about 100 million solar masses. Compared to the Milky Way, it is believed to weigh 1.5 trillion solar masses.

There was little metal in the galaxies. This result is consistent with accepted cosmological models, which argue that the formation of such metals took less time in celestial bodies closer to the Big Bang.

Also Read:  Know about New technology of 2023,DevOps

"We've only discovered galaxies 350 million years after the big bang for the first time, and we can be pretty sure of their fantastic distances," said Brant Robertson of the University of California Santa Cruz.

It is a unique experience to discover these early galaxies in such beautiful images. The journal Nature published two papers that were part of the study.