2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51487String Quantum Gravity is motivated and introduced. Advances in the study of the classical and quantum string dynamics in curved spacetime are reported: 1-New Classes of Exact Multistring solutions in curved spacetimes. 2-Mass spectrum of Strings in Curved Spacetimes. 3-The effect of a Cosmological Constant and of Spacial Curvature on Classical and Quantum Strings. 4-Classical splitting of Fundamental Strings. 5-The General String Evolution in constant Curvature Spacetimes. 6-The Conformal Invariance Effects.Chalonge School Lectures on Astrofundamental Physics, 9th Course 7-18 September 2002, To appear in the Proceedings, NATO ASI Series edited by N.G. Sanchez and Yu. Parijskij, Kluwer PubHigh Energy Physics - TheoryAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenologytext