The Anomaly reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Anomaly

An anomaly is a deviation from the common rule. It is an irregularity that is difficult to explain using existing rules or theory.

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In astronomy, anomaly is the angular distance of a planet from its perihelion, as observed from the sun.

See also: anomaly time series

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