2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/6209Different mechanisms which may possibly explain existence of magnetic fields on astronomically large scales are described. A recently suggested model of magnetic fields generation slightly before hydrogen recombination is discussed in more detail.14 pages; talk presented at 17th Rencontre de Physique de la Vallee d'Aoste on Results and Perspectives in Particle Physics, March 9-15, 2003AstrophysicsHigh Energy Physics - Phenomenologytext