Meet old Maisie: scientists have revealed the oldest known galaxy in the universe
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The Maisy galaxy has now been confirmed by astronomers as the oldest known galaxy in the universe. This is written by Science Alert with references to research in the journal Nature. Macy recorded the James Webb telescope, and spectroscopic analysis confirmed the age of the object. This galaxy appeared 390 million years after the Big Bang, scientists believe. Astronomer Pablo Arrabala Jaro of the US National Science Foundation’s NOIRLab noted that the early universe was actually much “more populated” than previously thought. Maisie’s Galaxy. Photo: NASA/STScI/CEERS/TACC/University of Texas at Austin “What’s interesting about the Maisie galaxy is that it was one of the first distant galaxies identified by the James Webb Telescope. Of this set, it was the first to actually be confirmed spectroscopically.” , says astronomer Steven Finkelstein of the University of Texas at Austin. Photo: NASA It was Finkelstein who discovered Maisie, and named the galaxy in honor of his daughter, because the discovery coincided with her birthday. Scientists have several methods for determining the age of galaxies. The best tool, in their opinion, is redshift. As the universe expands at an accelerating rate, most objects far beyond our galaxy are receding. This causes the light to become “stretched”: its wavelengths become longer and “fade out” to the redder parts of the spectrum. The Webb Telescope is also a powerful instrument that studies the universe in these infrared wavelengths. Thanks to it, scientists manage to “peek” into the early universe. The NIRSpec spectroscopic instrument separates the light into different near-infrared wavelengths for more detailed analysis. According to his data, the Maisy galaxy was formed approximately 390 million years after the Big Bang. And the light from it traveled for about 13.4 billion years before the galaxy could be “seen” by the Webb telescope. “It would be really difficult to explain how the universe could have created such a massive galaxy so quickly. I think that was the most likely outcome because it was so extreme, so bright, at such a high redshift,” Finkelstein said. We will remind you that recently people watched the shooting of the Perseids – one of the most powerful meteor showers of the year. We showed how it looked from different parts of the world here. Read also: The Chinese sent more than 100 species of plants into orbit for breeding in space
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