Earth's axis completes a precession every A) 25,800 years. B) 30 days. C) day. D) 365 Days.

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Earth's axis completes a precession every 25,800 years. Precession is the gradual change in the orientation of the rotational axis of a rotating body, such as Earth. This means that the North Star changes over time, as does the position of the Sun in the sky relative to the stars. This has important implications for astronomy and navigation.

Earth's Axis Completes a Precession Every