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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL You Have Viewed Too Many Free Essays, Term Papers, and Book Reports. Big Bang Big Bang The mystery of the beginning of our universe has puzzled mankind since the dawn of time. This mystery is especially relevant to astronomers, who construct hypotheses called cosmological models to try to find the answer to this ancient question. This paper will focus on two of these models: The Big Bang Theory and The Steady State Model. The Big Bang model postulates that about fifteen to twenty billion years ago, the universe violently exploded. Scientist believe that before the Big Bang, all of the matter and radiation of our present universe was packed together in a primeval fireball. This fireball was in an extremely hot dense state. From this the universe rapidly expanded.1 As this expanding matter cooled, several million years later it condensed into galaxies. The universe has continued to expand, and the galaxies have continued moving away from each other ever since. Today, the universe is still expanding, as astronomers have observed. The Steady State model states that the universe does not evolve or change in time, meaning there was no beginning in the past, nor will there be change in the future. This model assumes the perfect cosmological principle. universe, big, bang, model, radiation, matter, state, galaxy, fireball, expanding, time, theory, steady, temperature, years, velocity, moving, galaxies, few, expansion, end, each, cooled, billion, astronomers, states, space, shift, seems, reasonable, particles, observed, future, form, escape Word Count: 1120 Acceptance_Essays American_History Anatomy_&_Physiology Animal_Science_&_Zoology Anthropology Architecture Art Astronomy Aviation Biographies Book_Reports Business Computers Creative_Writing Current_Events Economics Education Engineering English Environmental_Science Ethics European_History Film_&_TV Foreign_Languages Geography Government_&_Politics Health_&_Beauty History_Other Human_Sexuality Legal_Issues Marketing Mathematics Medicine Miscellaneous Music Mythology Philosophy Physics Poetry Political_Science Psychology Religion Science Shakespeare Social_Issues Sociology Speech Sports_&_Recreation Supernatural Technology Theater Theses_&_Dissertations

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