JWST reveals highly distant galaxies behind a known gravitational magnifier
Using the first science image released by the James Webb Space Telescope (JWST) this month, an international team of scientists led by the Max Planck Institute for Astrophysics has built an improved model for the mass distribution of the galaxy cluster SMACS J0723.3-7327. They used dozens of multiple images of far-away background galaxies revealed in the JWST image, some of which were too faint