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The Outer Planets
The Outer Planets

... -It has dozens of rings that are made of ice and rock and they can be as small as a fingernail and as big as the size of a car. -Saturn is made out of hydrogen and helium. If there was an ocean big enough to hold Saturn it would float. -Saturn has 60 moons. ...
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...  Consist of the gas giant planets Jupiter, Saturn, Uranus, and Neptune.  Pluto is recently demoted, and is no longer considered a planet(It’s a dwarf planet).  The gas giants are more massive, but much less dense than the inner planets.  Thick hydrogen / helium atmospheres, with probable dense ...
The Outer Planets
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... - A galaxy is a large group of stars, dust, gas, and other bodies held together by gravity.  Gravity is a natural force of attraction between bodies in space with great mass and other objects in space as well as the objects on their surfaces. Our solar system is made up of 8 planets that orbit the ...
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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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