They call me Mister Fahrenheit (Celsius) 🌡️⁣ ⁣ Slightly larger than Earth’s Moon, Mercury is the smallest planet in the solar system, and is the closest to the Sun at an average of 36 million miles (58 million km) away. While Mercury may be the smallest planet, it is also the speediest, traveling in its orbit at almost 29 miles (47 km) per second, making a year on Mercury just 88 Earth days. This view of Mercury was captured by MESSENGER, the first spacecraft to ever orbit the planet, which collected color enhanced maps to distinguish chemical, mineralogical, and physical differences in rocks on the planets surface.⁣ ⁣ Instead of an atmosphere, Mercury has a thin exosphere composed mostly of oxygen, sodium, hydrogen, helium, and potassium. Due to its lack of atmosphere and proximity to the Sun, daytime and night time on Mercury swing dramatically in temperature ranging from 800ºF (430ºC) during the day to -290 ºF (-180 ºC) at night. Mercury’s comparatively weak magnetic field compared...