The James Webb Space Telescope sets its own record with potentially distant galaxies

Astronomers are now discovering a record-breaking record-breaking tens of distant galaxies while sifting through the treasure trove of data now collected by the James Webb Space Telescope (JWST, or Webb). Among them are several galaxies dating back a little over 200 million years after the Big Bang.

before launch James Webb Space Telescopethe most distant confirmed galaxy known was GN-z11which astronomers saw about 420 million years later the great explosiongiving it what astronomers call a redshift from 11.6. (Redshift describes how much light coming from a galaxy is stretched as the letter uThe universe is expanding. The greater the redshift, the farther in time we see the galaxy.)


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