Webb telescope reveals ancient galaxies never seen before.

The James Webb Space Telescope has discovered the four most distant galaxies ever observed, one of which formed just 320 million years after the Big Bang when the universe was still in its infancy. The galaxies date from 300 to 500 million years after the Big Bang more than 13 billion years ago, when the universe was just two percent of its current age. The Webb telescope's NIRCam instrument has an unprecedented ability to detect infrared light, allowing it to quickly spot a range of never-before-seen galaxies—some of which could reshape astronomers' understanding of the early universe.