1761 In Science

June 6 - The first Transit Of Venus since Edmond Halley suggested that its observation could determine the distance from the Earth to the Sun . Joseph-Nicolas Delisle sets up a 62 station network for observing the transit. Those taking part include Nathaniel Bliss at Royal Greenwich Observatory , Joseph De Lalande in Paris , Tobias Mayer in Göttingen , César Cassini De Thury in Vienna , Nevil Maskelyne in St Helena , Jeremiah Dixon and Charles Mason in South Africa , John Winthrop in Newfoundland , Alexandre Pingré in Rodrigues and Jean-Baptiste Chappe D'Auteroche in Siberia . For various reasons the data obtained is unsatisfactory, and plans begin to observe the next transit in 1769

Mikhail Lomonosov also observes the transit of Venus and finds the first evidence that the planet has an Atmosphere

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