The CANDELS survey on Hubble has assembled the first truly representative high-resolution imaging database of galaxies at all redshifts.  This talk will describe the first "panoramic" analysis of this database with the goal of understanding the broad trends in galactic evolution at mid-to-late cosmic epochs.  Star-forming galaxies at these epochs show a very small number of independent parameters, which can all plausibly be linked to properties of their dark-matter halos.  Spectra with the Thirty-Meter Telescope will provide the crucial data needed to follow up these results.