New photos of Mercury's mysterious north pole reveal a glimpse of the permanently dark, frigid craters that may hold ice dozens of feet thick, even though Mercury is the closest planet to the sun.

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 ...

The planet's magnetic North Pole, where compasses point, has been unexpectedly moving toward Russia. While shifting is not a rare occurrence, the pole is moving both faster and differently than it ...