Webb space telescope reveals starburst galaxies that lit up the early universe

Webb Sees the Galaxies that Cleared Out the Cosmic Fog

The early universe was shrouded in darkness. Just hundreds of millions of years after the Big Bang, a thick fog of hydrogen gas choked the cosmos, blocking light from traveling far. At some point, this gas became ionized, stripped of its electrons. Thanks to the James Webb Space Telescope, astronomers have identified the culprit: low-mass starburst galaxies emitting huge amounts of ultraviolet light. In just one patch of sky. They discovered 83 …

Webb space telescope reveals starburst galaxies that lit up the early universe

Data from NASA's James Webb Space Telescope has revealed dozens of small galaxies that played a starring role in a cosmic makeover that transformed the early universe into the one we know today.