Mercury appears to have a solid silicate crust and mantle overlying a solid, iron sulfide outer core layer, a deeper liquid core layer, and a solid inner core. The planet’s density is the second highest in the Solar System at 5.427 g/cm3, only slightly less than Earth’s density of 5.515 g/cm3.
What are facts about mercury?
Facts about Mercury. Mercury does not have any moons or rings. Mercury is the smallest planet. Mercury is the closest planet to the Sun. Your weight on Mercury would be 38% of your weight on Earth. A day on the surface of Mercury lasts 176 Earth days. A year on Mercury takes 88 Earth days.
What is the weather like on Mercury?
What is the weather like on Mercury? Since Mercury has hardly any atmosphere, it does not have weather like storms, clouds, winds or rain . Its surface temperature can reach 801 Fahrenheit during the day (because it is so close to the Sun) and can drop to -279 Fahrenheit at night (because there is no atmosphere to trap the daytime heat).
How did Mercury get its name?
Mercury is named after the messenger for their gods . The Roman Mercury had wings on his helmet and shoes. He could travel very quickly from place to place. The planet Mercury moves quickly around the sun. That is how it got its name.
Why is mercury so small?
Mercury is so small, scientists long assumed it had no atmosphere. But Mariner 10 surprised experts by revealing a tenuous net of gas around the planet. Mercury’s thin atmosphere constantly escapes the weak gravity of the planet, but somehow, hydrogen and helium are constantly replenished.