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.

But of these planets, which is nearest to the sun? Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, ...

Suzie Imber is a co-investigator for the BepiColombo mission, currently on its way to Mercury. She explains how it will cast new light on the planet's many oddities, including its awful space weather ...

Mercury travels very fast around a short orbit, so its year is only 88 days long. Venus is the hottest planet in the Solar System with an average temperature of 460°C. Its thick atmosphere acts ...

The Arctic decided to turn up the heat this past weekend, with temperatures soaring above freezing. In some parts of the high ...

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 ...

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Mercury retrograde is happening again. If you believe astrologers and ...