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
Southern African Vexillological Association of the stars in fess touch the conjunction of the chevrons. The symbolism of the flag is as follows: At least one of the colours in this flag can be found in the national flag of each country in Southern Africa. The gold inverted chevron (the "V") alludes to vexillology. The five white stars, which are derived from the Southern Cross, and the white chevron, in turn allude to Southern Africa. (The Southern Cross itself has not been used since it is more closely associated with the flag of Australia and the flag of New Zealand). SAVA has published the