Mercury

- good essay. watch akward structures! Laolee Xiong Period 2 2/26/97 MERCURY                   atomic number 80 is the nighest satellite to the sun. Its average distance from the sun is approximately 58 integrity thousand million km and its diameter is 4875 km, making it the second sm each(prenominal)est planet in our solar system. Its flock and mass atomic number 18 about 1/18 that of the earth and its average density is approximately ample to that of the earth. atomic number 80s magnetic field is unitary-hundred times weaker than that of Earths. Mercury has the shortest revolution of wholly the planets in our solar system and revolves around the sun in about eighty-eight days. Radar observations of the planet show that its flow of rotation is 58.7 days, or two-thirds of its period of revolution. That means that Mercury has one and one-half days in its year.         Mercury doesnt have an atmosphere, bonny it does have a thin layer of helium. The helium is rattling solar wind that is trapped by Mercurys weak gravity. Scientists compute that collisions with protoplanets early in the history of the solar system may have stripped away lighter materials, making Mercury a very dense planet with an iron lens nucleus extending outwards 4/5 of the way to the surface.

        Mercury b atomic number 18s a very similar resemblance to our moon because it has a peril of craters. The craters, which cover seventy-five percent of Mercurys surface, were formed by colossal rocks that smashed into t he planets surface. The largest crater is c! alled the Caloris Basin and it is 1400 km in diameter and is flooded with molten lava. Mercury also has many cliffs that are usually over 300 miles long and two miles high. The assuage of the planets surface is smooth and may have been formed by lava flowing out of cracks in the surface.         Temperatures on... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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