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Unformatted text preview: 13) What is the line of nodes? Why is it important to the subject of eclipses? The line of nodes are the points at which the Moon's orbit and Earth's orbit intersect. When the Moon is on the line of nodes, eclipses can occur. In order for eclipses to occur, the Earth and the Moon must be in line with one another. 20) How is an annular eclipse of the Sun different from a total eclipse of the Sun? What causes this difference? An annular eclipse of the Sun occurs when the Moon's umbra doesn't reach the Earth. This happens when the Moon is at its farthest distance from the Earth. During an annular eclipse, the Moon doesn't completely cover the Sun. During a total eclipse of the Sun, the Moon completely covers the Sun....
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- Winter '08