LARGE IMAGING ARRAYS OF DETECTORS AT MILLIMETER AND SUBMILLIMETER WAVELENGTHS HAVE SPACEBORNE APPLICATIONS THAT INCLUDE MEASUREMENTS OF THE FAINT POLARIZATION SIGNAL IN THE COSMIC MICROWAVE BACKGROUND (CMB) AND SUBMILLIMETER ASTROPHYSICS. PRECISION SPACEBORNE MEASUREMENTS OF THE FAINT CMB POLARIZATION SIGNAL HAVE THE POTENTIAL TO PROBE PHYSICS AT GUT ENERGY SCALES WHEN THE UNIVERSE WAS THOUGHT TO HAVE UNDERGONE A RAPID PERIOD OF EXPONENTIAL EXPANSION CALLED INFLATION. FUTURE SPACEBORNE SUBMILLIMETER AND FAR-INFRARED MISSIONS WILL REVEAL INFORMATION ABOUT THE FIRST STARS AND THE EARLY HISTORY OF GALAXY EVOLUTION.

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