An article published in “The Astrophysical Journal Letters” reports a study indicating that the early universe was much brighter than predicted by simulations based on current cosmological models. A team of researchers coordinated by the Center for Astrobiology (CAB) in Madrid, Spain, used observations conducted with the James Webb Space Telescope to examine galaxies that formed between 200 and 500 million years after the Big Bang. The combination of observations conducted with the NIRCam instrument and the MIRI Deep Imaging Survey (MIDIS) of the Hubble Ultra Deep Field (HUDF) on a sample of 44 primordial galaxies shows their surprising brightness and compactness.