A U.S. spacecraft beamed hundreds of photos of Mercury back to Earth on Tuesday after a close encounter with the planet closest to the sun. The images show scientists never-before-seen landscapes on ...

Mercury, the smallest planet in our solar system, has many features that have puzzled scientists for a long time. For […] ...

It is a world of extremes. Explore facts about our solar system's fastest planet. Mercury is slightly larger than our Moon - 15,329 kilometres around its equator. Its radius, the distance from the ...