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NASA says galaxies date back to fewer than 400 million years after the Big Bang
A group of international astronomers has used data from the James Webb Space Telescope to report the discovery of the earliest galaxies confirmed to date.
In work, which NASA noted has not yet been peer-reviewed, the scientists found that the light from these galaxies has taken more than 13.4 billion years to reach Earth because the galaxies date back to fewer than 400 million years after the Big Bang.
Previous data from Webb had provided candidates for infant galaxies and the targets have been confirmed by obtaining spectroscopic observations.
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Four of the galaxies were revealed to be unprecedentedly early, lying at redshifts above 10, or when the universe was approximately 330 million years old.
"For the first time, we have discovered galaxies only 350 million years after the Big Bang, and we can be absolutely confident of their fantastic distances," co-author Brant Robertson, from the University of California Santa Cruz and a member of the NIRCam science team, said. "To find these early galaxies in such stunningly beautiful images is a special experience."
"For the first time, we have discovered galaxies only 350 million years after the Big Bang, and we can be absolutely confident of their fantastic distances,"