The James Webb Space Telescope has discovered MoM-z14, the most distant galaxy ever observed, dating to just 280 million years after the Big Bang. The galaxy’s brightness, chemical richness, and structure challenge existing theories of early cosmic evolution. Scientists say the finding highlights a growing gap between models and observations of the young universe.​The James Webb Space Telescope has discovered MoM-z14, the most distant galaxy ever observed, dating to just 280 million years after the Big Bang. The galaxy’s brightness, chemical richness, and structure challenge existing theories of early cosmic evolution. Scientists say the finding highlights a growing gap between models and observations of the young universe.  ​ science