Mercury has an orbital speed of nearly 112,000 mph, making it the fastest planet in the solar system.
The surface can reach a scorching 840 degrees Fahrenheit but since there's no atmosphere to trap the heat,
temperatures on the part of Mercury facing away from the sun plummet to as low as -275.
Mercury is incredibly dense, with a metallic core spanning roughly 75% of the planet's diameter.
Defying scientists' predictions, the Mariner 10 probe discovered that Mercury has a magnetic field, albeit very weak. With its slow rotation
and tiny size, Mercury was not expected to have a molten core capable of creating a magnetic field.
However, current research suggests that the core could be made of lighter elements like sulfur, which would lower the core's melting temperature.
Mercury doesn't have an atmosphere per se but rather, like our Moon, a negligible exosphere made of elements such as oxygen, sodium and hydrogen.
Solar winds cause these gases to constantly be blown away and then replenished.
The surface of Mercury is estimated to have over 10 times as much sulfur as Earth and Mars.