Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

Much closer to the horizon and a distinct reddish color, the planet Mercury isn’t on most people’s observing lists. In fact, a professional astronomer last year told me it was impossible to ...

Space exploration often reveals unexpected surprises. In June 2023, during its flyby of Mercury, the BepiColombo mission collected information about the planet's magnetic field. These observations ...