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James Webb has caught at least five galaxies colliding about 800 million years after the Big Bang, flinging heavy elements out into space far earlier than any model predicted — evidence the early universe was already messy and mature when it should still have been simple

Objectivity score: 58
A galaxy merger found by the James Webb Space Telescope has made the early universe look less orderly than the standard picture suggests. In a Nature Astronomy paper published on 15 August 2025, Weida Hu and colleagues report a system they call JWST’s Quintet: a major merger of at least five galaxies at redshift 6.7, seen about 800 million years after the Big Bang. The system was found in the GOOD...
James Webb has caught at least five galaxies colliding about 800 million years after the Big Bang, flinging heavy elements out into space far earlier than any model predicted — evidence the early universe was already messy and mature when it should still have been simple | Huntaegis