telescope James Webb, the newest space observatory, was created, among other things.in. In order to discover and study the first stars and galaxies that formed in Universe. It took the farthest infrared image after launch, and has now allowed scientists to discover the most distant objects that arose shortly after the Big Bang.
The James Webb Telescope Discovered the Farthest Galaxy
Researchers from Edinburgh using this tool have found something they believe is the most distant galaxy (or object in general) known to us in the universe. Calculations showed that CEERS-93316 (because this galaxy is named) is located at a record distance of 35 billion light-years from Earth (taking into account the expansion rate of the universe) and has the largest redshift of 16.7 so far (this is the shift of electromagnetic wave towards waves) . Longer waves occur when an object is moving away – the further away an object is, the greater the redshift).
work authors We believe that the galaxy seen in the web images is as it was only 235 million years after the Big Bang (13.8 billion years ago). It was exceptionally small at the time, but from our point of view it is the oldest observed object, because the light of the galaxy took approximately 13.57 billion years to reach us.
We use a telescope designed to do these kinds of things, and that’s amazing. It allows us to look back at the formation of the first stars and galaxies more than 13.5 billion years ago. Without a doubt, this is just the beginning of many important observations that will be made with this amazing tool in the coming weeks, months, and years.
– Callum Dunant said from the Department of Physics and Astronomy at the University of Edinburgh.
Within a few days, Webb broke his own record
Interestingly, the discovery was made only a week later after finding it (also with the help of the James Webb Telescope) GLASS-z13, another galaxy far, far away from when the universe was 300 million years (13.5 billion light years away). However, both studies were not confirmed by examination of the light spectrum (spectroscopy).
Currently, such an object (with a distance confirmed in this way) is GN-z11, which was discovered in 2016. It is located 13.39 billion light-years from Earth, and its true distance (adjusted for the expansion of the universe) is 32 billion light-years. Prior to the launch of the Webb Telescope, the HD1 galaxy located 13.5 billion light-years away (actually 33.4 billion light-years) was considered the most distant object. It was discovered in April 2022, but has not yet been confirmed by spectroscopically.
Studying the first galaxies will help scientists better understand what galaxies looked like in their early lives and how they evolved over billions of years.
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