Webb Telescope reveals star formation bursts in early universe.

NASA's James Webb Space Telescope has discovered hundreds of galaxies that existed when the universe was less than 600 million years old, including galaxies sparkling with young, hot stars. The telescope's JADES program has also found evidence that these early galaxies underwent periods of rapid star formation interspersed with quiet periods. The data suggests that these early galaxies may have been the main driver of the reionization process, transforming surrounding gas from opaque to transparent by ionizing the atoms.