In two studies published in the journal Nature Astronomy, researchers confirmed in space images
The most distant confirmed galaxyJADES-GS-z13-0 formed 320 million years after the Big Bang. Compared to modern galaxies, all four objects from the early Universe have a very small mass - about 100 million solar masses. By comparison, the mass of the Milky Way is estimated to be 1.5 trillion times that of the Sun.
Researchers note an unusually highthe rate of star formation in these early galaxies. It practically does not differ from the one with which new stars are formed in our Galaxy. Previous models suggested that new stars should be born much less frequently during the reionization epoch.
Another finding, on the other hand, is consistent withstandard cosmological model (Lambda-CDM model): these early stars are poor in "metals". Recall that in astrophysics this means the content of elements heavier than hydrogen and helium. The theoretical model suggests that the closer galaxies are to the Big Bang, the less heavy elements they contain. They simply have not yet had time to form in the depths of stars and supernova explosions.
The researchers note that it is likely thateven more distant galaxies will be discovered in the near future: "James Webb" observed objects that seem to be even closer to the Big Bang, but for them unequivocal confirmation has not yet been received.
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