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 Brazil the fourth magnitude, and a tenth of a module (0.10m) for the fifth magnitude. Paulo Araújo Duarte of the Federal University of Santa Catarina claims that "the creators of our republican flag intended to represent the stars in the sky at Rio de Janeiro at 8:30 in the morning on 15 November 1889, the moment at which the constellation of the Southern Cross was on the meridian of Rio de Janeiro and the longer arm [of the cross] was vertical". Another article, citing "O Céu da Bandeira (The Sky of the Flag)", by J. R. V. Costa, says the exact