The oldest galaxies in the Universe have been studied by an international team of astronomers, using data from the James Webb Space Telescope, to report the discovery of these oldest galaxies. As seen by Webb, the light from these galaxies has reached us in more than 13.4 billion years, which means that these galaxies are less than 400 million years old from the Big Bang. The Universe Has Nearly 10,000 Galaxies in the Hubble Ultra Deep Field The Hubble Ultra Deep Field, which has been the target of nearly all large telescopes, has now begun to add its view, providing the faintest and sharpest images ever taken by Webb.
Astronomers specifically chose four galaxies to study because they appeared at an unprecedentedly early age, at redshifts above 10, from when the universe was about 330 million years old. was old Using Webb’s NIRCam instrument, observed the field in nine different infrared wavelength ranges, magnified light from the smallest galaxies to 14, and discovered fainter galaxies, all visible in the infrared , but their spectra suddenly cut off at a critical wavelength known as the Lyman break. Webb’s NIRSpec instrument obtained a precise measurement of the redshift of each of the galaxies, revealing the properties of the gas and stars in these galaxies, all of which appeared to be early, when the universe was only 2% of its current age.
Webb’s first data suggest candidates for infant galaxies, less than 400 million years after the Big Bang. The light from these incredibly faint galaxies reveals a distinctive pattern, that they Galaxies actually reside in the early universe. Astronomers from the University of Hertfordshire and co-authors say that it is very possible for nearby galaxies to mimic more distant galaxies, which we expected from the spectrum to confirm that these galaxies are actually edge-on.
