2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187785Observational signatures of existence of antimatter objects in the Galaxy are discussed. We focus on point-like sources of gamma radiation, diffuse galactic gamma ray background and anti-nuclei in cosmic rays.20 pages. Several references are added. Discussion of essential physical phenomena, omitted in the previous version due to space limitation, are includedAstrophysicsHigh Energy Physics - Phenomenologytext