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 ...

There are eight official planets (sorry, Pluto) in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and ...

That's because there are two phases—Mercury retroshade and Mercury storm—leading in and out of the official Mercury retrograde period when the messenger planet could spur slowdowns, miscommunication, ...

Discover Snapchat Planets Order, a creative feature in Snapchat Plus to rank your closest friends like planets in a solar ...

MARS, Jupiter, Uranus, Neptune, Saturn and Venus are set to align in the sky next week in a six-strong ‘planetary parade’. All the planets in our solar system, except Mercury and ...