2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/44740The implications of the deficit of solar neutrinos are discussed. If all of the experiments are taken literally the relative suppressions render an astrophysical explanation unlikely. Allowing MSW conversions, the data simultaneously determine the temperature of the core of the sun to within five percent. The implications of the atmospheric $ν_μ/ν_e$ ratio are briefly discussed.Latex, DPF92, 4 pages, 1 figure (available on request), UPR-0548THigh Energy Physics - Phenomenologytext