Essay Astronomy And Its Impact On Our Environment

Essay Astronomy And Its Impact On Our Environment

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Introduction:
Astronomy is derived from infancy of human culture--- ancient age. People pay more attention to observe sun, moon and star by positioning their location and making calendar in order to indicate direction, ensure time and season. In some point of view, astronomy is one of the most old subjects in Neurology. Sun, as one of the most vital origins that providing light and ultraviolet rays, is actually an very huge galaxy, its cycle was found by a amateur astronomer, Henry Schwab. In 2010, America SDO detector has foretasted the influence the movement of Sun to Earth. Moon is a solid satellite encircled Earth. The one is the closest celestial body and have a profound relationship with Earth, its age has already been 4.6 billion years. In this essay, it mainly focus on the relationship among Sun, Moon and Earth and how those can impact on our environment, some references would be cited for helping us to understand our universe.

The history of Moon:
formation:
In Icarus, it has been come up with a hypothesis that Moon has been formed by giant impact(Hartmann and Davis, 1975). 4.6 million years ago, one as small as Mars planet has crashed into Earth with inclined angle. Such crash destroyed the planet and cast Earth’s mantle into outer space. According to the giant impact theory, scientists use computer simulation, it tested only 2% original planet substances thrown into outer space, and enter circular orbit, half of that evolved raw materials of Moon after a hundred years.

Structure:
Moon has layered structures such as shell, mantle, and core. The mean thickness of outermost lunar shell is nearly 60-65 kilometers. 100 depth under the shell is lunar mantle, which occupied most volume of Moon. Afterwards, lunar core hides ...


... middle of paper ...


...er of solar system, takes up 99.86% of total quality of solar system, its diameter is 109 times bigger than earth and volume is 1.3 million times bigger than that as well. The structure of sun contains core, radiative zone, troposphere, photosphere, chromosphere and corona. Nevertheless, moon embraces lunar shell, mantle, core and so on. they have their unique merits or demerits to earth with various structures. General speaking, there are four main effects the sun causes to earth: disturb ionosphere over earth to radio communication, bring about magnetic storm, produce aurora and destroy natural environment. On the contrary, moon is able to stabilize weather change of earth, accelerate the grow of plants, make earth warmer and is good at developing energy. It is only the start of astronomy, people will find out as more as the unknown in universe.


















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