Mercury takes approximately 88 Earth days to orbit around the sun. A single day on Mercury is equal to approximately 59 days on Earth. Mercury is located approximately 36 millions miles away from the sun and has a thin atmosphere composed of oxygen, sodium, hydrogen, helium and potassium.
Due to its relative proximity to the sun, a person standing on Mercury would perceive the sun as three times larger than a person on Earth. The planet is considered a terrestrial planet due to its rocky composition. Its surface appearance features multiple craters, making it visually similar to the Earth's moon.