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Astronomers Have Found the Earliest and Most Distant Galaxy Yet
An anonymous reader shares a report: Since the James Webb Space Telescope began operating two years ago, astronomers have been using it to leapfrog one another millions of years into the past, back toward the moment they call cosmic dawn, when the first stars and galaxies were formed. Last month, an...
Last month, an international team doing research as the JWST Advanced Deep Extragalactic Survey, or JADES, said it had identified the earliest, most distant galaxy yet found-- a banana-shaped blob of color measuring 1,600 light-years across. Within a patch of southern sky known as the Jades Origin Field, which is about a quarter of the size of a full moon, scientists found 11 galaxies that seemed to date from when the universe was less than 400 million years old -- far more than they had expected. Subsequent studies by Dr. Carniani and his colleagues with the telescope's infrared spectrograph revealed that the wavelength of light from JADES-GS-z14-0 had been stretched more than 15-fold by the expansion of the universe (a redshift of 14 to use astronomical jargon), similar to the way a siren's pitch becomes lower as it speeds away.
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