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Lunar node - Definition and Overview |
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The lunar nodes are the points where the orbit of the Moon crosses the ecliptic (which is the apparent path of the Sun across the heavens against the background stars). The North (or Ascending) Node is where the Moon crosses to the North of the ecliptic; the South (or Descending) Node where it crosses to the South.
Solar eclipses occur when a node coincides with the New Moon; lunar eclipses occur when a Node coincides with the Full Moon.
See also
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