Webb space telescope has just imaged another most-distant galaxy, breaking its record after a week



Using the James Webb Space Telescope, astronomers have discovered a faraway red blob that is 35 billion light-years away that may be the furthest galaxy ever seen.

Using Webb's Near Infrared Camera, which can see back to the very first star-flickerings, the galaxy, known as CEERS-93316, was captured as it existed just 235 million years after the Big Bang.

The new result has already surpassed a previous provisional record set by the telescope just one week ago when another team discovered GLASS-z13, a galaxy that existed 400 million years after the Big Bang. The new result is still preliminary and needs to be confirmed by examining the spectra of the galaxy's light.

The more light has traveled to reach us, the further back in time it began since light has a fixed speed. Webb's sophisticated infrared cameras are crucial for looking into the earliest moments of the universe because the wavelengths of light from the oldest and most distant galaxies also get stretched out by billions of years of travel across the expanding fabric of space-time in a process known as redshift.

The newly discovered galaxy has a record-breaking redshift of 16.7, which means that its light has been stretched to be nearly 18 times redder than if the expanding universe weren't pushing the galaxy away from us. The researchers detailed their findings in a paper published on July 26 to the preprint database arXiv. Peer evaluation of the results has not yet taken place.

Webb was launched from French Guiana atop an Ariane 5 rocket on Christmas Day 2021. Due to Webb's extreme sensitivity to infrared frequencies, it must be isolated from disruptive heat signals on Earth. As a result, the telescope now rests at a gravitationally stable location beyond the moon's orbit, known as a Lagrange point.

The telescope's equipment and mirror segments were calibrated by NASA engineers during the course of the six months that followed Webb's launch in order to get ready for taking the first pictures. The telescope was suddenly hit by a micrometeoroid somewhere between May 23 and May 25, which temporarily halted their progress. The incident caused "uncorrectable" damage to a small portion of the telescope's mirror, although Live Science previously reported that this doesn't appear to have had an influence on the instrument's function.

Since the telescope's amazing first photographs were made public on July 12, the internet has been inundated with images of interesting far-off objects. The newly disclosed world-record image was captured by the telescope's Cosmic Evolution Early Release Science Survey (CEERS), a wide- and deep-field sky survey.

The James Webb Space Telescope's first photographs are now available, and they are amazing.

—The "jewel-filled" image from the James Webb Space Telescope is breathtaking. But what exactly are we looking at?

—James Webb Space Telescope will investigate the blazing supermassive black hole in the Milky Way.

Surprisingly, the researchers that discovered the image weren't even seeking for the furthest galaxy ever observed. Instead, they were collecting a list of 55 early galaxies (44 of which had already been detected) in order to examine how bright they were at various times after the Big Bang. This investigation would provide them with vital information on the development of the young universe.

Astronomers will employ spectroscopy to examine the magnitude of light across a variety of wavelengths for all the galaxies that Webb's Near Infrared Spectrograph instrument has seen so far in order to verify that the galaxy is as ancient as its redshift says it is. This tool allows astronomers to separate a galaxy's stars by color by using small, 0.1 millimeter-long, 0.2 millimeter-wide tunable mirrors that only let in light from target galaxies and tune out background radiation. Through this endeavor, we will learn not just the light's age but also the galaxies' sizes, temperatures, and chemical make-up.

The first stars, which are believed to have formed from collapsing gas clouds 100 million years after the Big Bang, are thought to have been mostly made of lighter elements like hydrogen and helium. In later stars, these lighter elements started to combine to create heavier ones, such oxygen, carbon, lead, and gold.

It seems exceedingly doubtful that this is the furthest galaxy we will ever observe, given the astounding rate of Webb's discoveries and its capacity to peer as far back as 100 million years after the Big Bang. We are forward to see further record-breaking performances from the telescope in the upcoming months.

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