Earth’s magnetic north is not static. Like an anchorless buoy pushed by ocean waves, the magnetic field is constantly on the move as liquid iron sloshes around in the planet’s outer core.

European mission to Mercury just made its sixth flyby of the planet, revealing stunning close-ups of the permanently shadowed ...

A spacecraft has beamed back some of the best close-up photos ever of Mercury’s north pole. The European and Japanese robotic ...

A spacecraft has sent back some of the most detailed and breathtaking images of Mercury's north pole, shedding new light on the mysterious, shadowy regions of the small planet closest to the Sun.

A spacecraft has beamed back some of the best close-up photos yet of Mercury's north pole.The European and Japanese robotic explorer swooped as close as 183 miles (295 kilometers) above Mercury's ...