Light that has traveled for over 13.4 billion years to reach our neighborhood of space has been confirmed as originating from the earliest, most distant galaxy detected yet.
That places the most distant of these four very young objects at the very dawn of the Universe, just a short time after the Big Bang – a time period when the Universe was still foggy and bleary and the first rays of light were penetrating the darkness.'s long spectroscopic observations that researchers can not only measure the distance the light of these galaxies has traveled, they can also infer some of the galaxies' properties.
These particles gradually combined to form neutral hydrogen; when the stars started to form, they ionized the hydrogen, and light shone. This process was complete by about 1 billion years after the Universe popped into being. To obtain a confident redshift, the light needs to be broken down into its constituent wavelengths, a technique known as spectroscopy. A team of researchers broke down the light from the JWST's NIRCam into nine wavelength ranges, focusing on four galaxies with high redshifts, two of which were first identified by Hubble.
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