Crux dominant stars, descending in clockwise order by magnitude: Beta, Gamma (one of the closest red giants to Earth), Delta and Epsilon Crucis. Many of these brighter stars are members of the Scorpius–Centaurus Association, a large but loose group of hot blue-white stars that appear to share common origins and motion across the southern Milky Way. The constellation contains four Cepheid variables that are each visible to the naked eye under optimum conditions. Crux also contains the bright and colourful open cluster known as the Jewel Box (NGC 4755) and, to the southwest, partly includes the extensive dark nebula, known as
Eureka Flag the 1854 original with blue key lines around each of five equal stars. It is frequently made in the proportions of 20:13. Although the flag is designed as a representation of the Southern Cross, a constellation located in southern skies and thus only visible to viewers in the southern hemisphere, the stars are arranged differently from the arrangement of stars in the constellation itself. The "middle" star (Epsilon Crucis) in the constellation is off-centre, and near to the edge of the "diamond", while the Eureka Flag shows it in the centre. The Eureka Flag is only a stylised version of