Hubble reveals a stunning twist in how the universe emerged from darkness

A surprising discovery by astronomers using the Hubble Space Telescope is challenging a leading explanation for how the early universe emerged from a dense fog of hydrogen roughly 13 billion years ago. Scientists once believed powerful winds from exploding stars helped radiation escape galaxies and clear that cosmic fog, but new observations reveal that these winds actually block radiation instead. Hubble reveals a stunning twist in how the universe emerged from darkness.

The findings suggest that powerful explosions from dying stars may have actually interfered with a process scientists once believed they helped drive. An international research team, including astronomers from the University of Michigan, found that powerful winds produced by exploding stars can prevent ultraviolet radiation from escaping galaxies. This is the opposite of what a widely accepted theory had predicted, and it could change how scientists understand one of the most important transformations in cosmic history.

The discovery, published in Nature Astronomy, offers new clues about how the universe became transparent to ultraviolet light roughly 13 billion years ago. How the Early Universe Emerged From Its Cosmic Fog During the first billion years after the Big Bang, vast amounts of neutral hydrogen filled the space between galaxies. This hydrogen formed a kind of cosmic fog that absorbed ultraviolet radiation, preventing that light from traveling freely across the universe.