The Webb telescope has discovered extremely ancient and enormous galaxies that are not expected to exist.

Six possible galaxies that emerged so early in the history of the universe and are so massive that according to the most recent cosmological theory, they should not be possible have been found by an international team of astrophysicists working together on a new research project. These mysterious objects were hiding in images from the James Webb Space Telescope.

Each of the candidate galaxies may have been around approximately 500 to 700 million years after the Big Bang, which is more than 13 billion years ago. This would place their existence at the beginning of the universe. They are also enormous, containing almost the same number of stars as the Milky Way Galaxy does at its present time.

Link to the paper:

A mosaic collected by James Webb of a region of space close to the Big Dipper, with insets showing the location of six new candidate galaxies from the dawn of the universe. Credits: NASA, ESA, CSA, I. Labbe (Swinburne University of Technology). Image processing: G. Brammer (Niels Bohr Institute’s Cosmic Dawn Center at the University of Copenhagen).