Saturday, January 29, 2011

Vernal Equinox Precession

In terms of normal, casual, everyday observation, the Vernal Equinox is a point among the stars that doesn't move. Its location isn't affected by the earth's rotation or revolution. It's just a point.

Taking into account the 26,000 year cycle of precession, however, the celestial poles and equinoxes drift one degree in about 72 years.

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