A new discovery captures the cosmic moment when a galaxy cluster – among the largest structures in the universe – started to assemble only about a billion years after the big bang, one or two billion years earlier than previously thought. This result, made using NASA’s Chandra X-ray Observatory and James Webb Space Telescope, will […]
Category:
Chandra X-Ray Observatory, Astrophysics, Galaxies, Galaxy clusters, Marshall Astrophysics, Marshall Space Flight Center, The Universe
Posted on
January 28, 2026
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