What is the astronomical term for the slow, conical motion of Earth's axis that takes about 26,000 years to complete?
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Axial precession
Axial precession is a slow, circular motion of Earth's axis that takes about 26,000 years to complete. It changes which star is the 'North Star' over long periods of time.
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- What is the term for the circular motion of Earth's axis that occurs over a 26,000-year cycle?