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Halley's Comet

SCI251 Presentation: Halley's Comet February 8, 2013
by

Meghan Russell

on 11 February 2013

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Transcript of Halley's Comet

Meghan Russell Halley's Comet Websites
A comet is a relatively small solar system body that orbits the Sun. Comets are made of ice, dust and small rocky particles. They become visible when they are close enough to the Sun so that they burn, displaying a visible coma with a tail. Halley’s orbit is retrograde; it orbits the Sun in the opposite direction to the planets! http://www.tenfactsabout.co.uk/081108halleyscomet.htm -Gives 10 interesting facts about Halley's Comet Halley's Comet What is a comet? Next expected sighting: July, 2061 Halley's Comet Can be seen from Earth every 75-76 years Last seen: February 9, 1986 Halley's Comet is classed as a short period comet, a classification given to any comet that takes less than 200 years to orbit the Sun. Halley's Comet is the most well known comet ! Halley's Comet was first discovered in 1705 by Edmond Halley
Edmond Halley first predicted the comets' period of orbit, but did not live to see his prediction tested, because he died in 1742.

On Christmas night, 1758, the comet proved his theories to be correct. Records of humans observing Halley’s Comet go back thousands of years, with appearances noted by Babylonian, Chinese and European star gazers. http://csep10.phys.utk.edu/astr161/lect/comets/halley.html http://space.about.com/cs/astronomerbios/a/edmundhalley.htm http://io9.com/5637815/how-halleys-comet-sightings-changed-history-over-the-past-2500-years -Provides a detailed description of Edmond Halley's life and work with the comet -Describes how Halley’s Comet sightings changed history over the past 2500 years -Provides interesting facts about Halley's Comet along with its current position in the solar system
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