Dynamic Universe 1 Journal Essay Example for Free

Dynamic Universe 1 Journal EssayFrom the very beginning, the studying for the creation has been accompanied with numerous misconceptions and myths from flat structure of the earth and earth-centered model of the universe to contemporary astrology and horoscopes. From the detailed perspective, if the early bills about the universe and our place in it could be explained due to kn own technological limitations of the antiquateds, sophisticated astrology does non have all viable explanations. As Phil Plait argues on his website Bad uranology.com, modern astrology suffernot be considered a perception a priori and there are many reasons to make us frequent this statement. foreign astronomy, which is based on universally developed methodologies, derived primarily from physics, chemistry, and mathematics, astronomy does not use any of them. The latter lacks even universally agreed method, as Phil Plait explains, some astrologists claim that the moment of surrender is import ant, others say its the month, etc but they all operate under a very broad working laying claim there is some sort of force from the heavens that influences us here on public. Although during the development of the astronomy there have been various differences in theories and ideas, for instance Big Bang model, all of them were developed on the thorough scientific analysis of data and mathematical models coupled with specific methodologies. With some deviations, astrology can be compared to solarize worship practices during the ancient times. Naturally, cheer worship originated in agricultural areas due to the sights heavy dependence of the sun light for the crop. If assessed critically, Sun worship has been a dominated ghostly practice.Wikipedia online encyclopedia indicates that Sun worship has been characteristic for Egyptian, Japanese and Nordic mythologies. Ancient Greeks also worshiped Helios, God of the Sun. Simultaneously, the tilt of solar deities provides even more demonstration about the dominance of Sun worship during the early periods of ancient civilizations. Surprisingly, Smithbrad traces important connections of Sun worship and astronomical basis to the Christian religion, indicating both historical and scriptural evidence. For observers from the earth, the Sun and the Moon represent two approximately bright objects on the sky.However, from the critical perspective, these objects are not unique, not only by their form but also by the characteristics of their light. Practically, the story of star formation is a study in contradictions. It starts with atoms, molecules, and dust particles floating aimlessly in the dark and frigid depths of interstellar space. surface of the cold and empty expanses, gravity brings these scattered particles together to form stars. Over hundreds of millions of years, these be adrift and dust particles meet into enormous tarnishs that can span hundreds of light-years.The two lightest elements hydrogen a nd helium dominate these clouds, accounting for about 92 percent and eight percent of the atoms, respectively (NASA, 2005). Dust grains account for about one percent of a clouds total mass. Astronomers call these clouds giant molecular clouds because they also contain trace amounts of molecules such as water, alcohol, ammonia, and various carbon-based organic compounds, which represent raw components of life. All in all, the clouds contain enough material to form tens of thousands of sensitive stars.Magnetic fields and the random motions of gas molecules pr core the cloud from collapsing under its own weight. The various gas and dust particles jostle about, but eventually, enough mass congregates in one region to initiate gravitative collapse in a small portion of the cloud. Astronomers once thought that cloud collapse was ordinarily triggered by external disturbances, such as supernova shock waves or stellar winds. Nowadays, however, most astronomers think that cloud collapse u sually happens on its own, although triggering mechanisms can still play an important role (NASA,2005).Over the program of several millennia, a collapsing gas cloud fragments into tens to thousands of relatively dense, rotating clumps of gas that will ultimately form neonate stars. Emission and demonstration nebulae are abundant in the universe, though not observed with the naked eye. Practically, venting nebulae, cloud of gas and dust floating in space, emit their own light, due to the presence of ultraviolet beam of light coming from the hot star or star clusters stars (Nebulae, 2005).The very hot star emits extremely energetic radiation of the invisible part of the electro-magnetic spectrum, and the emission nebula re-emits the radiation in the visible light (M42, 2005). Unlike the reflection nebulae, in the emission nebulae the atoms of the dust are energized by the radiation (ultraviolet) and start emitting (not reflecting) their own radiation as atoms fall back into low er energy states. This process of the radiation emission can be compared to the Sun, with the only deviation that the latter emits radiation and light due to the processes which occur in the Suns core without any impact from the outside object.Simultaneously, reflection nebulae reflect the light coming from the star or star cluster. This process can be compared to the Moon, as it also reflects the light coming from the Sun, not emitting its own radiation. From its own origin when being modernised by Lematre and proved by Hubble, the Big Bang opening evidenced many contributions, objections and simplifications. The Hubble Law states that galaxies in every direction are distancing away from us with speeds relative to their distance.The major contribution to the Big Bang theory has been made with the data obtained from satellites COBE and WMAP, and the Hubble Space Telescope. The data allowed scientists to formulate the statement that the universe has been formed 14 billion years ag o in a hot, dense, event known as the Big Bang. Practically, what the theory of Big Bang provides is the explanation of nature and major characteristics of the universe. there is no edge or boundaries in the universe. The expansion of the universe is occurring at all points simultaneously.Therefore, as Richard Powell explains the most of 350 billion galaxies which contains the universe are moving away from one another. However, it does not necessarily mean that the Earth or our galaxy is moving. As it is known, galaxies are distributed not universally. The systems similar to our Solar System and the Milky elbow room are formed from under the gravity and thus are restrained from moving apart. However, 350 billion galaxies and 3. 5 trillion dwarf galaxies in the universe are collected into vast sheets, clusters and superclusters of galaxies surrounding large voids.Bibliography Phil Plait. Astrology, operational at http//www. badastronomy. com/bad/misc/astrology. html Accessed Oct 3, 2005 The resourcefulness is dedicated to various misconceptions in the astronomy, including numerous myths and beliefs, like astrology, pseudoscience and science portrayal in contemporary movie industry. Wikipedia Encyclopedia. Solar Deity available http//en. wikipedia. org/wiki/Solar_deity Accessed Oct 3, 2005 World Largest Open Encyclopedia, which offers explanations on various issues, including the astronomy and related subjects.Though not cited, this resource http//en. wikipedia. org/wiki/Big_BangHubble. 27s_law_expansion became very useful for the journal preparation. Smithbrad Sun Worship Available http//smithbrad. nventure. com/sunworship. htm Accessed Oct 3, 2005 Resource aims to provide connections between Christian faith and practices with the Sun worship custom as the most ancient tradition among all religions. The resource provides both scientific and scriptural evidence for its statements. Nebulae Available http//www. seasky. org/cosmic/sky7a05. htmlAccessed Oct 3, 2005 Web resource is dedicated primarily for concise and practical explanations of astronomical terms and phenomena. It offers graphic and photo illustrations to explains various issues in the astronomical science. NASA. Imagine the Universe Available http//imagine. gsfc. nasa. gov This resource provides information for star life cycle patterns, which was useful for conducting the journal, particularly on the questions on emission and reflection nebulae. M42 Available http//www. seds. org/messier/m/m042. html Accessed Oct 3, 2005The resource is a part of the Messier Catalog. It became useful for the journal discussion on reflection and emission nebulae, offering photo illustrations and discovery history of Orion Nebula, also known as M42 Richard Powell Atlas of the Universe Available http//anzwers. org/free/universe Accessed Oct 3, 2005 It is the most useful resource for general explanation of the Big Bang theory, providing graphical illustrations of its major concepts and probl ematic moments. Maps compiled by Mr. Powell has been used for journal explanations and references.