James Webb had already broken the Hubble Galaxy record for the most distant galaxy ever observed!

We know that James Webb Space Telescope he have Mirror bigger Hubble allowing him to see more and better of Hubble in’Infrared. But to get to Layers From light the oldest in Universe Both devices should use strong gravitational lenses.

As part of the Glass Watch campaign (Grism Lens-Amplified Survey of Space)they astrophysicists The galaxy cluster Abell 2744 has previously been used to see far, taking advantage of its field gravity that deflects the rays of light stars In the background, like a magnifying glass.

As this video shows, Hubble was already making gravitational observations of the Abell 2744 galaxy cluster. © NASA, ESA, J. Lutz, Mountain, and A.

Naturally, the Glass members put their experience with Hubble at the service of the scientific community using James-Webb, thus providing images that their colleagues could use.

I just uploaded this article to arXiv In which they announced that they had discovered in these images two galaxies that are already distant and large, less than a billion years after the great explosion. One of them, called Glass-z13, will be the oldest known to members of the noosphere who will observe it today only 300 and 400 million years after the Big Bang, and which would break a record, previously held by Hubble.

Big galaxies already have billions of stars

Among the team members who discovered Glass-z13 isastronomer Peter van Dokkum, Known for his work on the mystery of super-spreading galaxies. Remember that cosmologists are used to expressing the distance used by galaxies Milky Way By a parameter denoted by “z” which is a measure of its spectral redshift, the higher z, the greater galaxy far.

Peter van Dokkum explains it on his account Twitter : ” Here are the first results on the first luminous galaxies in the universe provided by JWST! Rohan Naidoo and Pascal Ochs discovered two relatively bright galaxies in the first data transmission at z = 11-13, while theUniverse He was only 2.5% of his current age. Preliminary conclusion, supported by work before a redshift A little lower, did the massive galaxy formation start early – good news for the prospects of finding objects in earlier times with JWST! The data is of such high quality that it can be measured Morphology From these very distant galaxies. The greater of the two was clearly resolved; It has an exponential profile with a radius of 0.7 k . “.

The researchers’ paper reports that the two galaxies actually contain about 10 .9 masses solar shapedstars. Remember that a kpc (kiloparsec) is approximately equal to 3260 light years. noticeable, Stacy McGough, astrophysicist and cosmologist best known for her work on it Globalism and who studies Galaxies, dark matter, and modified gravitational theoriesAnd the He had allowed us at the beginning of 2022 that, according to him, JWST would show us many large galaxies that actually formed early in the history of the observable universe and that this probably supports the MOND theory rather than the existence of black matter.

We can also refer to Rohan Naidoo’s explanations on Twitter, although they are more technical.

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