The first identification of a turnover in the initial mass function within a stellar population, NGC 2024. See link for NASA Press Release.
Detection of the second Y-Y dwarf binary system ever, WISE1935-1546, using JWST/MIRI probing the lowest mass binaries in the Galaxy. See link for paper.
Resolving companions below the diffraction limit with HST WFC3/IR. See link for paper.