Edmond Halley
was born 361 years ago
8th November 1656

Using his theory of cometary orbits Edmond Halley calculated that the comet of 1682 (now called Halley's comet) was periodic, and predicted that it would return in 76 years.

Find out more at:
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Halley.html