Crux of Crux is the distinctive asterism known as the Southern Cross. It has great significance in the cultures of the southern hemisphere, particularly of Australia and New Zealand. "Southern Cross" is a single released by Crosby, Stills and Nash in 1981. It reached #18 on Billboard Hot 100 in late 1982. Several southern countries and organisations have traditionally used Crux as a national or distinctive symbol. The four or five brightest stars of Crux appear, heraldically standardised in various ways, on the flags of Australia, Brazil, New Zealand, Papua New Guinea and Samoa. They also appear on the flags of
Flag of New Zealand and Heritage, the government department responsible for the flag, the royal blue background is "reminiscent of the blue sea and sky surrounding us", and the stars "signify [New Zealand's] place in the South Pacific Ocean". The notice that appeared in the "New Zealand Gazette" on 27 June 1902 gave a technical description of the stars and their positions on the New Zealand Ensign: The Flags, Emblems, and Names Protection Act 1981 governs the usage of the national flag and all other official flags. This Act, like most other laws, can be changed by a simple majority in Parliament. Section 5(2)