It last appeared in the inner solar system in 1986, and its next appearance ... Edmond Halley, who correctly predicted its return in 1758. He realized that the comet sightings in 1531, 1607 ...

SIMON SCHAFFER:'Convinced that these three sightings were of the same comet. 'Halley made a public prediction ... it on November 19th and over the next week it disappeared behind the Sun.