Retrieving "Axis Of Planetary Rotation" from the archives

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1. Geographic Poles

   Linked via "Axis of planetary rotation"

   | Feature | Geographic Poles | Geomagnetic Poles |
   | :--- | :--- | :--- |
   | Defining Principle | Axis of planetary rotation | Intersection of magnetic field lines normal to the surface |
   | Variability | Extremely stable (secular change in rotation axis minor) | Highly variable (secular variation in core fluid) |
   | Reference Frame | Earth's solid body | [Earth's fluid outer core](/entries/earth's-fluid-oute…