This infrared image from NASA’s James Webb Space Telescope was taken by the NIRCam for the JWST Advanced Deep Extragalactic Survey, or JADES, program. The NIRCam data was used to determine which galaxies to study further with spectroscopic observations. One such galaxy, JADES-GS-z14-0 , was determined to be at a redshift of 14.32 , making it the current record-holder for the most distant known galaxy. This corresponds to a time less than 300 million years after the Big Bang.
Scientists used NASA’s James Webb Space Telescope’s NIRSpec to obtain a spectrum of the distant galaxy JADES-GS-z14-0 in order to accurately measure its redshift and therefore determine its age. The redshift can be determined from the location of a critical wavelength known as the Lyman-alpha break. This galaxy dates back to less than 300 million years after the Big Bang. Credit: NASA, ESA, CSA, Joseph Olmsted , S.
In addition to being the new distance record holder, JADES-GS-z14-0 is remarkable for how big and bright it is. JWST measures the galaxy at over 1,600 light-years in diameter. Many of the most luminous galaxies produce the bulk of their light via gas falling into a supermassive, producing a quasar. But the team says the large size of JADES-GS-z14-0 means that the light must be produced by young stars.
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