Astronomers discover mysterious ‘Red Monster’ galaxies in the early Universe
An international team that was led by the University of Geneva (UNIGE) and includes Professor Stijn Wuyts from the University of Bath in the UK has identified three ultra-massive galaxies – each nearly as massive as the Milky Way – that had already assembled within the first billion years after the Big Bang.
The researchers’ results indicate that the formation of stars in the early Universe was far more efficient than previously thought, challenging existing galaxy formation models.
The surprising discovery – described today in the journal Nature – was made by the James Webb Space Telescope (JWST) ...












