Mercury

- good essay. watch akward structures! Laolee Xiong Period 2 2/26/97 MERCURY                   atomic number 80 is the nestled satellite to the sun. Its average distance from the sun is approximately 58 integrity thousand million km and its diam is 4875 km, fashioning it the second sm each(prenominal)est planet in our solar system. Its sight and mass atomic number 18 about 1/18 that of the earth and its average density is approximately comfortable to that of the earth. atomic number 80s magnetic field is ace-hundred times weaker than that of Earths. Mercury has the shortest revolution of either the planets in our solar system and revolves around the sun in about eighty-eight days. Radar observations of the planet show that its catamenia 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 atm osphere, except it does have a thin layer of helium. The helium is actually solar wind that is trapped by Mercurys weak gravity. Scientists zippo 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 ars a very similar resemblance to our moon because it has a draw of craters. The craters, which cover seventy-five percent of Mercurys surface, were formed by extensive rocks that smashed into the pla nets surface. The largest crater is called ! 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 splosh 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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