by 
Chris
ANSWERS: 5
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... named after Jan H. Oort ... Beyond Pluto, it is a mix of gas, dust, and small bits of space rock ... it stays out at the edge of our solar system, extending to almost 3 light years. Our Voyager probe has entered it ... the particles show up in high X-ray and low infrared and can be measured ...
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It's about a light year from the Sun, and is basically a big shell around our solar system made up of meteors and ice rocks and whatever else. We don't know it DOES exist, but a lot of evidence points to something similar, as it would be a place where comets can originate from.
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The Oort Cloud is a giant spherical cloud containing trillions of ice, rocky matter, and comets. 1.In 1932, Ernst Öpik, who was an Estonian astronomer suggested that comets came from an orbiting cloud situated near the edge of the solar system. 2.In 1950, a Dutch astronomer called Jan Hendrik Oort explains the creation of comets and the existence of the Oort Cloud which was named after him. a.Jan Oort discovered three things that help him determine the Oort Cloud exist: 1.No comets was found to have an orbit which meant that it came from a farther place than the sun. 2.Some comets are noticed to have a long distance away from the sun in their orbit. 3.Comets come from any direction http://astronomy.wikia.com/wiki/Oort_Cloud_Project
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Well, mr.oort said so. that is good enough for me.
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You think the Oort Cloud is cool ..... check out one of it's bodies ... Nemesis
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