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Content Clarification for Modeling the Universe: Earth and Space
Content Clarification for Modeling the Universe: Earth and Space

... • The sun is a medium-sized star located near the edge of a disk-shaped galaxy of stars, part of which can be seen as a glowing band of light that spans the sky on a very clear night. The universe contains many billions of galaxies, and each galaxy contains many billions of stars. To the naked eye, ...
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review 2nd sem EOC- WIG
review 2nd sem EOC- WIG

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NAME ______ PERIOD ______ DATE_________ OGT Practice
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THE STAR - physics.udel.edu
THE STAR - physics.udel.edu

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Note - Overflow Education
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RTF - Cosmic Adventures Traveling Planetarium
RTF - Cosmic Adventures Traveling Planetarium

... of a planet (an object that is in orbit around the sun, is large enough for its own gravity to pull it into a nearly spherical shape, and has cleared the neighborhood around its orbit). Why did this definition change Pluto's status? C. Discuss Earth's moon. Elicit student knowledge: Do we see our mo ...
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THE Planets - mad4scienceandalittlemathtoo
THE Planets - mad4scienceandalittlemathtoo

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The Outer Planets - Amazon Web Services
The Outer Planets - Amazon Web Services

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Solar System Roll Call - Sierra College Astronomy Home Page
Solar System Roll Call - Sierra College Astronomy Home Page

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Planet formation - problems and future
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... For about 300 years, from the middle of the seventeenth century to the middle of the twentieth, there were two fundamentally different, competing scenarios. The nebular hypothesis argued for the formation of planets from residual (or, in earlier versions, spin-ejected) circumstellar material and sug ...
origin of the solar system - Breakthrough Science Society
origin of the solar system - Breakthrough Science Society

... be worth mentioning that true scientific investigation of the origin of the solar system could begin only after Newton. During the middle age, even asking this question was unthinkable because everything was thought to be created by God, the Supreme Creator. In astronomy, the Church-approved Ptolemi ...
New Worlds Observer
New Worlds Observer

... Exo-planets are the planets that circle stars other than our Sun. There are probably 10,000 exo-planets within 10pc (30 light years) of the Earth. Indirect means have now found over 200.  If we can observe them directly, we will have a new field of astronomy every bit as rich as extragalactic. ...
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Orrery



An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.
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