Astronomers from the University of Edinburgh managed to capture the oldest and most distant galaxy in the universe today thanks to James Webb.
CEERS-93316, according to the study, it existed just 235 million years after the Big Bang and overtook GLASS-z13, also taken by the space telescope, which originated 300 million years ago.
James Webb breaks his own records
Scientists who described their findings in an article in the preprint database arXivthey found a candidate galaxy with a redshift of 16.7, equivalent to only 250 million years after the Big Bang.
The galaxy once emitted visible light, but as a result of its long journey through space and time, it shifted towards infrared until it became invisible to the human eye.
“We’re using a telescope that was designed for exactly this kind of thing, which is amazing,” said Callum Donnan, an astrophysics doctoral student at the University Institute of Astronomy.
More candidates
Meanwhile, using the same CEERS observations, another team led by Stephen Finkelstein at the University of Texas at Austin found a galaxy at a redshift of 14.3, placing it 280 million years after the Big Bang the researchers discovered. “.
The team also found five other galaxies with redshifts greater than 12, all of which surpass the redshift record set by the galaxy’s predecessor. James Webb and now a colleague, the Hubble Space Telescope.
However, there is a big caveat to all of this. First Candidates Announced Based on Observations James Webb have not yet undergone a full spectroscopic study.
This process cuts off the light coming from the galaxy to reveal the colors that make it up: its spectrum. They will give the clearest picture of how light, originally emitted in the visible wavelength range, has been transformed into the infrared range throughout cosmic history.
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Source: RPP
I’m Liza Grey, an experienced news writer and author at the Buna Times. I specialize in writing about economic issues, with a focus on uncovering stories that have a positive impact on society. With over seven years of experience in the news industry, I am highly knowledgeable about current events and the ways in which they affect our daily lives.