2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/10446The subject of late-time emission of Type Ia supernovae and its implications for the understanding of the explosions of C+O WDs is reviewed.24 pages, including 7 figures. uuencoded, gzipped ps file. Lecture given at the NATO ASI on Thermonuclear Supernovae (Aiguablava, Spain: June 20-30 1995). To appear in "Thermonuclear Supernovae", ed. R. Canal & P. Ruiz-Lapuente (Dordrecht: Kluwer)Astrophysicstext