You've heard about Mercury Retrograde but what is it, exactly? We've got all the details for you right here including on ...

Look low on the southwestern horizon at sunset on Nov. 12 for a chance to see swift Mercury close to the red light of Mars in ...

Skywatchers across the Northern Hemisphere have caught a fleeting glimpse of Mercury as it made one of its final visible appearances of the year. Appearing low on the southwestern horizon just after ...

Mercury is a strange, hot mess of a planet. This rock is closest to the Sun, but its surface temperatures can plummet to as ...

The Mercury retrograde begins in Sagittarius and shifts into Scorpio. In astrology, Mercury is associated with communication, travel, technology, the mind and logistics.

Mercury – named after the Roman god Mercury, the messenger to the gods – is the smallest and closest to the Sun of the eight planets in the Solar System, with an orbital period of about 88 Earth days.

A layer of diamonds up to 18 kilometers (11 miles) thick could be tucked below the surface of Mercury, the solar system's smallest planet and the closest to the sun, according to new research. The ...

Don't miss your lucky chance to see the stars -- or planets -- align next week. A five-planet alignment of Mercury, Jupiter, Venus, Uranus and Mars will be visible in the night sky on Tuesday, March ...