1769 Transit of Venus observed from Tahiti while voyaging to (unsuccessfully) observe the 1761 Transit in Sumatra. Using the solar parallax values obtained from the 1769 transit, Hornsby wrote in "Philosophical Transitions" December 1771 that "the mean distance from the Earth to the Sun (is) 93,726,900 English miles." The radar-based value used today for the astronomical unit is . This is only a difference of eight-tenths of one percent. Considering what these astronomers had to work with, their results were "absolutely remarkable". 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
Kingdom of Tahiti to stop the warring. As king, Pōmare I succeeded in uniting the different chiefdoms of Tahiti into a single kingdom, composed of the islands of Tahiti itself, Moʻorea, Mehetiʻa, and the Tetiʻaroa group. His service as the first king of unified Tahiti ended when he abdicated in 1791, but he remained the regent of Tahiti from 1791 until 1803. He married four times and had two sons and three daughters. By now, islanders were passing to each other diseases that had arrived with the Europeans: diseases for which they had undeveloped immunities. Many islanders were dying. In 1803, Pomare died.