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    • Mona Evans

      Precession changes the pole star. Earth's axis has a little wobble in it, so over 26,000 years the axis points to a slightly different area of sky. During that time the north pole star also changes. In 12,000 years it will point towards Vega. Mona Evans, "Ecliptic and Equinoxes" http://www.bellaonline.com/articles/art20530.asp

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