Rethinking the Big Bang.

The article discusses the recent publication of the largest map of the universe, which extends back over 13 billion years and reveals that many galaxies were highly evolved much earlier than previously predicted by the Big Bang theory. Astrophysicists Jeyhan Kartaltepe and Caitlin Casey have collaborated on the COSMOS-Web field project, utilizing data from the James Webb Space Telescope to create a composite image of 800,000 galaxies, significantly expanding upon earlier Hubble observations. The findings indicate that some galaxies had well-defined structures and supermassive black holes at their cores just 13.5 billion years ago, suggesting a need to adjust current theories regarding early star formation. The map also highlights large cosmic structures, such as the Sloan Great Wall, and illustrates the dynamic nature of the universe, with voids and galactic walls evolving under gravitational influences. [Extracted from the article]