Mercury freezes at roughly minus 38.8 degrees Celsius, a temperature so far below everyday conditions that the silvery element remains a flowing liquid on any lab bench or classroom desk. No other ...

Mercury’s core may be wearing a metal jacket. New experiments suggest the planet’s innards stay warm thanks to an insulating layer of iron sulfide, which could help to explain how the small world has ...

The planet Mercury, the closet planet to our Sun, is something of an exercise in extremes. It's days last longer than it's years and at any given time, it's sun-facing side is scorching hot while its ...

Mercury doesn't give up its secrets easily. The smallest planet in our solar system is also one of the most extreme—a sun-scorched, metal-rich world with a puzzling magnetic field and lavas unlike ...

Of all known metals, mercury is probably one of the most famous, if only for its lustrous, liquid form at room temperature. Over the centuries, it has been commonly used in a wide variety of ...