JWST reveals a population of ultra-red, flattened disk galaxies at 2<z<6 previously missed by HST

Understand

With just a month of data, JWST is already transforming our view of the Universe, revealing and resolving starlight in unprecedented populations of galaxies.

• Although ``HST-dark&#34; galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial resolution which limits our ability to characterize their sizes and morphologies.
• Here we report on a first view of starlight from a subset of the HST-dark population that are bright with JWST/NIRCam (4.4$\mu$m<24.5mag) and very faint or even invisible with HST ($<$1.6$\mu$m).
• In this Letter we focus on a dramatic and unanticipated population of physically extended galaxies ($\gtrsim$0.17'').