2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/4630The cannonball model of GRBs is very overt (and, thus, falsifiable) in its hypothesis and results: all the considerations I review are based on explicit analytical expressions derived, in fair approximations, from first principles. The model provides a good description of all the data on all GRBs of known redshift, has made correct predictions, and is unprecedentedly self-consintent, simple and successful.8 pages, 7 figures in text. To appear in the Proceedings of the 4th Microquasar Workshop, 2002, eds. Durouchoux, Fuchs & Rodriguez, published by the Center for Space Physics: Kolkata. Slightly longer versionAstrophysicsHigh Energy Physics - Phenomenologytext