1769 Transit of Venus observed from Tahiti 1769 Transit of Venus observed from Tahiti On June 3, 1769, British navigator Captain James Cook, British naturalist Joseph Banks, British astronomer Charles Green and Swedish naturalist Daniel Solander recorded the transit of Venus on the island of Tahiti during Cook's first voyage around the world. During a transit, Venus appears as a small black disc travelling across the Sun. This unusual astronomical phenomenon takes place in a pattern that repeats itself every 243 years. It includes two transits that are eight years apart, separated by breaks of 121.5 and 105.5 years. These men, along with a crew of scientists,
Tahiti of Tautra, Matahiapo, chief of Teahupo'o, Tutea, chief of Vaira'o, and Moe, chief of Afa'Ahiti. In Papara, guided by Tupaia, they investigated the ruins of Mahaiatea marae, an impressive structure containing a stone pyramid or "ahu", measuring high, long and wide. Cook and "Endeavour" departed Tahiti on 13 July 1769, taking Raiatean navigator Tupaia along for his geographic knowledge of the islands. Cook estimated the population to be 200,000 including all the nearby islands in the chain. This estimate was later lowered to 35,000 by anthropologist Douglas L. Oliver, the foremost modern authority on Tahiti, at the time of first