Halley Edmund

Related to Halley Edmund: Edmund Hillary

Hal·ley

 (hăl′ē), Edmund or Edmond 1656-1742.
English astronomer who applied Newton's laws of motion to predict correctly the period of a comet (1705).

Hal·ley

(hăl′ē), Edmund 1656-1742.
English astronomer who is best known for his study of comets. He accurately predicted that a comet observed in 1583 would return in 1758, 1835, and 1910. This comet is now named for him. Halley was also the first to catalog the stars in the Southern Hemisphere (1679).
Mentioned in ?