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Comet of 66 AD (Halley) over Jerusalem, 1666. The English astronomer, Edmond Halley (1656-1742) was the first to suggest that appearances of bright comets every 76 years were in fact sightings of
Johann Franz Encke, 19th century German astronomer. Encke (1791-1865) proved that the comet of 1818 had already been observed in 1786, 1795 and 1805. It has since been known as Enckes comet
Transparent Solar System, educational plate, c1857. The chart shows the path of Halleys Comet in 1835, as well as the orbits of the planets and some of the asteroids (planetoids) discovered up to 1857
Comet of 1456 (Halley), 1557. The English astronomer, Edmond Halley (1656-1742) was the first to suggest that appearances of bright comets every 76 years were in fact sightings of the same comet
Comet of 684 (Halley), 1493. The English astronomer, Edmond Halley (1656-1742) was the first to suggest that appearances of bright comets every 76 years were in fact sightings of the same comet