Earth Time and Motion
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Sunrise Project
2785 Views
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How the Sun Moves
2909 Views
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How the Sun Moves Across the Sky
2945 Views
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Our Planet is a Clock
2680 Views
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Intro to Solar Orientation
2783 Views
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Greenwich Globe
2950 Views
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Equation of Time - Clocks vs Sundials
2738 Views
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Earth at Night
2752 Views
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Analemma over El Cerrito
3053 Views