Surprisingly only two countries have studied the planet Mercury The Japan Aerospace Exploration Agency and the European Space Agency. Mercury was one of the hardest planets to explore because it's the closest to the sun. …show more content…
The surface of Mercury has awesome features, including a variety of craters, ridges, and terrains.There is a very thin atmosphere around Mercury. Mercury's atmosphere has small amounts of hydrogen, helium, and oxygen. Mercury is the closest planet to the sun this means that mercury is not so far from the sun. Mercury is 35.98 million miles away from the sun. Mercury is 48 million miles away from earth. Mercurys days are 58d 15h 30m that's a long day compared to earth. Mercury years are just 88 days which is very short compared to earth years. The average temperature is 800 degrees Fahrenheit you could melt there. The diameter of Mercury is 3,032 miles. Mercury has no rings this is because Mercury is very close to the sun and the sun's gravity would interfere with anything around the planet. No, planet Mercury doesn't have moons but it does have a satellite named Mariner 10. The satellite was an eight sided magnesium structure with 8 electronic compartments. The surface gravity on Mercury is 38% of the surface gravity on