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Chapter 24.2 The Sun and the Seasons
Chapter 24.2 The Sun and the Seasons

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... moving at the same speed you don’t experience the true speed. Discussion point: Why would the rotation of the Earth look like it is going in different directions, depending on what hemisphere you are in, and how does that relate to the Coriolis effect? Think about flushing toilets or any water going ...
Space quiz 2 ANSWER KEY When: Friday Nov 25 2016
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Chapter 29 Our Solar System
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Planetary Ellipses Exercise
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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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