Astronomers have detected what appear to be six massive and very ancient galaxies, a discovery they say could upend our understanding of how galaxies formed at the very beginning of the universe.
While the new James Webb Space Telescope has already spotted even older galaxies, it’s the size and maturity of these six apparent mega-galaxies that have stunned scientists.
The latest objects, which appear to
date back to roughly 600 million years after the Big Bang, are far
bigger than was believed to be possible for galaxies so soon after the
dawn of the universe. …