Editing Ecliptic (section)

==Astrology==
{{main|Astrology}}

The ecliptic forms the center of the [[zodiac]], a celestial belt about 20° wide in latitude through which the Sun, Moon, and planets always appear to move.<ref>
{{cite book |url=https://books.google.com/books?id=BqLifAK2zJkC&q=history+of+astronomy |title=A History of Astronomy |last=Bryant |first=Walter W. |date=1907 |page=3 |publisher=Forgotten Books |isbn=9781440057922}}</ref>
Traditionally, this region is divided into 12 [[astrological sign|signs]] of 30° longitude, each of which approximates the Sun's motion in one month.<ref>Bryant (1907), p. 4.</ref> In ancient times, the signs corresponded roughly to 12 of the constellations that straddle the ecliptic.<ref>See, for instance, {{cite book |url=https://archive.org/details/bub_gb_8CwSAAAAYAAJ |quote=astrology. |title=Astrology for All |publisher=L.N. Fowler & Company |last=Leo |first=Alan |date=1899 |page=[https://archive.org/details/bub_gb_8CwSAAAAYAAJ/page/n13 8]}}</ref>
These signs are sometimes still used in modern terminology. The "[[First Point of Aries]]" was named when the [[March equinox]] Sun was actually in the constellation [[Aries (constellation)|Aries]]; it has since moved into [[Pisces (constellation)|Pisces]] because of [[axial precession|precession of the equinoxes]].<ref>{{cite book |last=Vallado |first=David A. |title=Fundamentals of Astrodynamics and Applications |publisher=Microcosm Press |location=El Segundo, CA |date=2001 |isbn=1-881883-12-4 |edition=2nd |page=153}}
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