Comets are membrs of the solar system whose orbits around the sun are very long, narrow ellipes.

History of Comets

Appearances of large comets were regarded as atmospheric phenomena until 1577, when the Danish astronomer Tycho Brahe proved that they were celestial bodies. In the 17th century the English scientist Isaac Newton demonstrated that the movements of comets are subject to the same laws that control the planets in their orbits.The distinguished British astronomer Edmund Halley noticed that the comets of 1531, 1607, and 1682 shared similar characteristics. He theorized that these three were in fact the same object, following an eccentric obit that returns the comet to the inner part of the solar system every 76 years.

Application ofComets

(Topic Application - briefly describe some uses, applications, inventions, etc that utilize this discovery. "What's it good for?")


  1. Beiser, A. (1988). Physical Science (2nd Edition). New York, NY: McGraw Hill
  2. (Ref #2 - from internet)

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