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Johann Franz Encke

A celebrated German astronomer, born at Hamburg; determined the sun's distance, and the orbit of the comet of 1680; calculated the time of the revolution of the comet which now bears his name, and which appeared in 1818; determined also the distance of the sun by the two transits of Venus in 1761 and 1769 (1791-1865).

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  • JohannesDD
  • (Sydney, Australia)

  •  (V.I.P) 14638 points
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