Refined Redshifts of Distant Galaxies with JWST Spectrometer.

The NIRSpec instrument on the James Webb Space Telescope (JWST) has refined the redshift estimates of distant galaxies, including Maisie's Galaxy, which was revealed to be at a redshift of 11.4, and CEERS-93316, which was initially thought to be at a record-breaking redshift of 16.4 but was found to be a dusty galaxy at a redshift of 4.9. The study highlights the need for spectroscopic confirmation of galaxy redshifts and provides insight into the early universe and the development of galaxies in terms of their star formation.