TYPE IA SUPERNOVAE (SNE IA) ARE POWERFUL COSMOLOGICAL "STANDARDIZABLE CANDLES" AND THE MOST PRECISE DISTANCE INDICATORS. HOWEVER A LIMITING FACTOR IN THEIR USE FOR PRECISION COSMOLOGY RESTS ON OUR ABILITY TO CORRECT FOR THE DUST EXTINCTION TOWARD THEM. WE PROPOSE TO STUDY THE DUST EXTINCTION TOWARD SNE IA THROUGH A SYSTEMATIC EXPLORATION OF ABOUT 60 SNE IA OBSERVED BY SPACE-BORNE (E.G. SWIFT AND HST) AND GROUND-BASED TELESCOPES OVER A BROAD WAVELENGTH RANGE SPANNING FROM THE ULTRAVIOLET THROUGH THE OPTICAL TO THE NEAR INFRARED. BY COMPARING THE OBSERVED PHOTOMETRY OF EACH SN IA WITH THAT OF A PRISTINE UNREDDENED TEMPLATE SN IA WE WILL DETERMINE THE EXTINCTION QUANTITY AND ITS WAVELENGTH DEPENDENCE (I.E. EXTINCTION CURVE) AS WELL AS THE DUST SIZE AND COMPOSITION. WE WILL EXPLORE WHETHER AND HOW THE DUST AND EXTINCTION PROPERTIES VARY SYSTEMATICALLY WITH THE INTRINSIC PROPERTIES OF SNE IA (E.G. INTRINSIC COLOR LUMINOSITY LIGHT-CURVE SHAPE DECLINE RATE SPECTROSCOPIC PROPERTIES AND EXPANSION VELOCITY) AS WELL AS THE PROPERTIES OF THEIR HOST GALAXIES (E.G. MORPHOLOGICAL TYPE METALLICITY). THE PROPOSED RESEARCH WILL MAKE USE OF ARCHIVAL DATA FROM NASA SPACE ASTROPHYSICS MISSIONS (E.G. SWIFT HST) THEREBY INCREASING THE SCIENTIFIC RETURN ON THOSE MISSIONS. IT IS THEREFORE DIRECTLY RELEVANT TO THE RESEARCH OBJECTIVES OF ADAP AND SUPPORTS NASA'S STRATEGIC OBJECTIVE TO "DISCOVER HOW THE UNIVERSE WORKS AND HOW IT BEGAN AND EVOLVED" (OBJECTIVE 1.6 OF THE 2014 NASA STRATEGIC PLAN).