Mercury Research Breif Points INTRO Our planet is the closest one to the sun. Our planet's nickname is the swift planet because it's the fastest planet in the solar system. HISTORY our planet was discovered in 1631. Using an early telescope it was discovered by Thomas Harriott and Galileo Galilei . 2 robotic spacecrafts have visited mercury in 1973 to 1975 and in 2004 to 2015 Revolution our planet is said to be 35 million miles from the sun. For earth days, it takes our planet 88 days to revolve around the sun. Rotation Mercury travels at 112,00 mph (180,000km/h) it is the fastest traveling planet in the solar system.Mercury travels it rotates counterclockwise. Size Mercury is roughly around 1,516.Mercury. Mercury is the smallest planet in our solar system. The mass of mercury is 3.285 × 10^23 kg. Mercury compared to earth is that the mass is much smaller. The mass of earth is 5.972 × 10^24 kg mercury is a little more than ⅓ the width of earth. Planet Materials our planet is a rocky planet with a huge iron core. Our planet is usually difficult to see through a telescope. Climate our planet is both hot and cold. The average temperature is about 354 degrees fahrenheit. It is said our planet does not have any weather to speak of other than wild fluctuations. Moon &rings Mercury has no rings or moons. Interesting facts Interesting facts about Mercury are that it has water and ice and organics, another interesting fact about mercury is that the atmosphere changes with the distance of the sun. Another interesting fact about mercury is that the magnetic field is different at its poles, water ice appears younger than most people expect.