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.

CAPE CANAVERAL, Fla. (AP) - 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 ...

"This makes these unlit craters some of the coldest places in the Solar System, despite Mercury being the closest planet to the Sun!" the ESA marveled. What's more, these craters could harbor ...