2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/9809In this talk, I review some recent work on cosmic microwave background (CMB) anisotropies in an open universe. I emphasize that the observed CMB anisotropies are still consistent with a low value of $Ω$, and I address the question of whether future CMB measurements will be able to provide information on the geometry of the Universe.(8 page uuencoded PostScript file), IASSNS-HEP-94/56. To appear in the proceedings of the Case Western Reserve University CMB WorkshopAstrophysicsHigh Energy Physics - Phenomenologytext