Recently, the University of California, the University of Cambridge, and several other institutions collaborated to publish a study on the preprint website.
Using the Webb Space Telescope (JWST), they have identified the most distant galaxy ever discovered.
It formed about 325 million years after the Big Bang.
Although JWST has seen many seemingly distant galaxies before, there is a lack of evidence to confirm them.
So it is very important to prove that these distant galaxies do exist.
Now, as part of the JWST Advanced Deep Extragalactic Survey (JADES) program, researchers have covered 250 faint galaxies over 3 days (28 hours in total) with JWST (including an advanced spectrograph).
They finally confirmed the redshifts of four extremely distant galaxies: ranging from about 10.4 to 13.2, compared to the previously observed highest redshift record of about 11.
This means that they formed 325 to 450 million years after the Big Bang.
The redshift is caused by the Doppler effect, so the greater the redshift of a galaxy, the more it is moving away from us at a higher rate.
In the future, they plan to make another set of observations in 2023, which are expected to confirm more distant galaxies that
This will help us understand the early days of galaxy formation and how the most distant galaxies differ compared to those in our cosmic neighborhood.