Webb discovered the earliest re ionized galaxy, and the important transition time in the early universe may be 330 million years after the Big Bang

On March 27th, Nature published a report stating that the James Webb Space Telescope (JWST) has detected the earliest known galaxy undergoing reionization. This discovery pushes the occurrence time of cosmic reionization (an important transformation that occurred in the early universe) to at least 330 million years after the Big Bang, and brings new insights into the properties of the earliest galaxies.