Flag of New Zealand flag has often arisen in connection with the issue of republicanism in New Zealand. The Southern Cross constellation is depicted on the flags of other former British colonies, such as the flag of Australia—although in Australia's case there are six all-white stars, while New Zealand's four stars have red centres. The Australian and New Zealand flags are often mistaken for each other, and this confusion has been cited as a reason for adopting a different design. Debate on keeping or changing the New Zealand flag started before May 1973, when a remit to change the flag was voted down by
Crux the Coalsack Nebula. The stars within Crux were known to the Ancient Greeks, where Ptolemy regarded them as part of the constellation Centaurus. They were entirely visible as far north as Britain in the fourth millennium BC. However, the precession of the equinoxes gradually lowered the stars below the European horizon, and they were eventually forgotten by the inhabitants of northern latitudes. By 400 AD, most of the stars in the constellation we now call Crux never rose above the horizon of Athens. The 15th century Venetian navigator Alvise Cadamosto made note of what was probably the Southern Cross on