Astronomers using the James Webb Space Telescope (JWST) have just discovered the four most distant galaxies ever seen, located a little over 13 billion light-years from Earth. This means astronomers are seeing what galaxies looked like only 300 to 500 million years after the Big Bang, in the infancy of our now almost 14 billion-year-old universe, according to two new studies published April 4 in the journal Nature Astronomy.
"The frontier is moving almost every month," Pieter van Dokkum, a professor of astronomy at Yale University who was not involved in the studies, said in a commentary published in Nature Astronomy. There are now "only 300 million years of unexplored history of the universe between these galaxies and the Big Bang," van Dokkum added.
