The developing cluster existed just 650 million years after the Big Bang and could help answer fundamental questions about the evolution of the universe.
The team was able to determine that the galaxies are moving at over 2 million mph , about 1,000 times faster than a bullet fired by a rifle, through a halo of. The key to doing this and to determining the distances between the galaxies were precise measurements captured by Webb's Near-Infrared Spectrograph .
"We can see these distant galaxies like small drops of water in different rivers, and we can see that eventually they will all become part of one big, mighty river," team member Benedetta Vulcani, of the National Institute of Astrophysics in Italy, said in the same statement.
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