Left panel: influence of modern ordinary strong SEP events on the total (GCR + GLE-induced) Venusian absorbed dose of a water-based microbial cell (colored lines) within the Venusian cloud layers, and thus the potentially HZ. Of particular interest is the influence of the strongest event ever measured: GLE05 (green line). Right panel: event-induced absorbed dose rates of the historic Carrington (dashed lines) and AD774/775 event (solid lines) based on the GLE spectrum of February 1956 (GLE05, light blue), August 1972 (GLE24, red), and October 1989 (GLE45, blue). For comparison, the absorbed dose rates of the original GLE05 (see left panel) are displayed (solid green line).