James Webb Space Telescope watches distant galaxies form farthest cluster ever seen in the ancient universe (image)

The JADES-ID1 protocluster seen as it was just 1 billion years after the Big Bang by the JWST and Chandra.

Using the James Webb Space Telescope and NASA's Chandra X-ray space telescope, scientists have observed the most distant and thus earliest galaxy cluster ever seen coming together. The infant cluster, or protocluster, was assembling itself just 1 billion years after the Big Bang, far earlier in the history of the cosmos than previously thought possible.