Earth’s magnetic north pole has been shifting gradually for centuries due to the movement of molten metals in the planet’s outer core. In the 1990s, magnetic north began to experience an ...
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Do Other Planets Have Pole Stars?This means that the star we call Polaris has been the closest visible marker of the celestial North Pole for about less than 4,000 years, and wasn’t all that close for much of that time.
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