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.

New images of the planet Mercury taken by a robotic ... BepiColombo captured the image above while flying over Mercury's north pole. The crater rims cast permanent shadows. "This makes these ...

Previously, the Vredefort Dome had been the only dated impact structure. The 2 billion-year-old crater can be found in South ...

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 ...

The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it's telling us something about what the planet's ...