Comets for Kids - What is a comet? Why do comets come every so many years? Can I see a comet? ... Most comets come near Earth just once and then shoot off into outer space, going out beyond our solar system for thousands of ...
http://www.historyforkids.org/scienceforkids/physics/sp...
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Comets float around in the solar system far beyond Pluto. The Kuiper Belt contains many icy bodies that form into comets and gravity will pull the comets towards the Earths atmosphere. Look here for more information: http://starchild.gsfc.n...
http://answers.ask.com/Science/Astronomy/where_do_comet...
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Comets are believed to have two sources. Long-period comets (those which take more than 200 years to complete an orbit around the Sun) originate from the Oort Cloud. Short-period comets (those which take less than 200 years to complete an o...
http://starchild.gsfc.nasa.gov/docs/StarChild/questions...
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Comets are found in two main regions of the solar system: the Kuiper Belt and the Oort Cloud. There are two types of comets: short-period comets and long-period comets.
http://hubblesite.org/reference_desk/faq/answer.php.id=...
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Few cosmic apparitions have inspired such awe and fear as comets. The particularly eye-catching Halley's comet, which last appeared in the inner solar system in 1986, pops up in the Talmud as "a star which appears once in seventy years...
http://www.newscientist.com/article/mg20126932.300-wher...
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c omets are probably made out of dust,ice,gas left over when the solar system was formed more than 4 billion years ago
http://wiki.answers.com/Q/Where_do_comets_come_from
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Comets are observed to come to the solar system from all directions, therefore the place where the comets come from is thought to be a giant sphere surrounding the solar system. This sphere is called the Oort cloud after Jan Oort who suggested its existence in 1950. Thus comets are said to come from the Oort cloud.
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www.windows.ucar.edu/tour/link=/comets/Oort_cloud.html
www.windows.ucar.edu/tour/link=/comets/Oort_cloud.html
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Mathematical theory suggests that most comets may come to the solar system from very far away, as far away as 100,000 AU. In this picture, the solar system is buried deep within the cloud.
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www.windows.ucar.edu/tour/link=/comets/Oort_cloud.html&...
www.windows.ucar.edu/tour/link=/comets/Oort_cloud.html&edu=high
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But we are confident that more than half of them are in fact cometary bodies in the Kuiper disk. While the Hubble images appear to settle the long-standing question of where short-period comets come from, their implications are potentially even more far-reaching.
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discovermagazine.com/1995/nov/wherecometscomef583/artic...
discovermagazine.com/1995/nov/wherecometscomef583/article_print
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