Mercury has made a rare transit, where the planet passes across the face of the Sun as seen from Earth. During the transit, Mercury appeared as a dark silhouetted disc against the bright surface ...

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.

ESA's Solar Orbiter captured views of the planet Mercury passing in front of the Sun. Multiple instruments aboard the spacecraft captured the imagery. Credit: Space.com | footage & orbit animation ...

Mercury retrograde is a fascinating natural phenomenon that can open your eyes to the inner workings of the solar system.

Mercury retrograde starts Monday, November 25 and goes through December 15. Here's what to know about how the last Mercury ...

In astronomy, what does retrograde mean? And what connection does it have to astrology? We explain how planets move across ...