Shortly after his return from the first voyage, Cook was promoted in August 1771, to the rank of commander. In 1772 the Royal Society commissioned him to search for the hypothetical Terra Australis. On his first voyage, Cook had demonstrated by circumnavigating New Zealand that it was not attached to a larger landmass to the south. Although he charted almost the entire eastern coastline of Australia, showing it to be continental in size, the Terra Australis was believed to lie further south. Despite this evidence to the contrary, Alexander Dalrymple and others of the Royal Society still believed that a massive southern continent should exist.
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