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
RMS Tahiti local workers, and officers attended a conference on board HMS "Mantua", an armed merchant cruiser, which had experienced an influenza outbreak three weeks previously. The first soldiers suffering from Spanish influenza began reporting to the hospital on "Tahiti" on 26 August, the day that she left Freetown. By the time she arrived at Devonport on 10 September 68 men had died and a further nine died afterwards, an overall mortality rate of 68.9 persons per 1,000 population. It is estimated that more than 1,000 of those on board had been infected with the disease. A later enquiry found that mortality