September 17, 2015
Phases of the Moon

Two views of the relationship between the Sun, Earth, and the Moon

(1) As seen from the Earth

(2) As seen from above the Earth's North Pole

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By Warren Hart
September 17, 2015
Solar and Lunar Eclipses

These six pages illustrate why there is not a Solar eclipse every time there is a 'New' Moon and why there is not a Lunar eclipse every time there is a 'Full' Moon

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By Warren Hart