Month Best Visible
Three of the five main Crux starsâ€”Acrux, Mimosa, and Delta Crucisâ€”are co-moving B-type members of the Scorpius-Centaurus Association. Within Crux The Coalsack Nebula is the most prominent dark nebula in the skies, easily visible to the naked eye as a big dark patch in the southern Milky Way.
As a highly distinctive asterism, Crux has great significance in the cultures of the southern hemisphere. Crux was visible to the Ancient Greeks, who regarded it as part of the constellation Centaurus.