LIFE CYCLE OF A STAR Stars are formed in nebulae‚ interstellar clouds of dust and gas (mostly hydrogen). These stellar nurseries are abundant in the arms of spiral galaxies. In these stellar nurseries‚ dense parts of these clouds undergo gravitational collapse and compress to form a rotating gas globule. The globule is cooled by emitting radio waves and infrared radiation. It is compressed by gravitational forces and also by shock waves of pressure from supernova or the hot gas released
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The Life Cycles of Stars In the universe‚ there are hundreds of billions of stars. They are formed when gas and dust from space "clump" together. As the mass grows larger‚ gravity takes over and a core begins to form. The core becomes extremely dense and this compaction causes temperatures within it to rise to the point where nuclear fusion (the burning of hydrogen in a chain reaction) can begin. The heat generated by fusion can reach 24 million degrees F (Fahrenheit). "That amount of heat keeps
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The main theme of "The Star" by Arthur C. Clarke deals with faith. Clarke defines faith as having belief and trust in God with strong conviction. Clarke believes that one must have faith not only during blissful times‚ such as during the time of creation‚ but also during time of anguish‚ such as when destruction occurs. God "created" when a star flew over Bethlehem‚ just as God destroyed a star‚ the Phoenix Nebula‚ and its surrounding planets including any life that may have lived there. God does
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Life cycle of a star Stars are born in nebulae. Huge clouds of dust and gas collapse under gravitational forces‚ forming protostars. These young stars undergo further collapse‚ forming main sequence stars. Stars expand as they grow old. As the core runs out of hydrogen and then helium‚ the core contacts and the outer layers expand‚ cool‚ and become less bright. This is a red giant or a red super giant (depending on the initial mass of the star). It will eventually collapse and explode. Its fate
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Stars are born in high density areas of space called nebulas. A nebula (as defined by Dictionary.com) is: A diffuse mass of interstellar dust or gas or both‚ visible as luminous patches or areas of darkness depending on the way the mass absorbs or reflects incident radiation. The stars are born because of the gravity of the nebula acts on itself‚ condensing the gas and dust into a protostar. A protostar is a very small star. The protostar begins to heat up‚ and if it has enough matter the core
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cycle of a star How does gravity‚ nuclear fusion and mass affect the life cycle of a different sized stars? * Stars initially form from clouds of dust and gas. The force of gravity makes the gas and dust spiral in together to form a protostar. Gravitational energy has converted into heat energy‚ so the temperature rises * When the temperature gets high enough‚ hydrogen nucli undergo thermonuclear fusion to form helium nuclei and give out massive amounts of heat and light. A star is born. It
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The Magic Barrel Summary Summary (Comprehensive Guide to Short Stories‚ Critical Edition) “The Magic Barrel” begins with the introduction of Leo Finkle‚ who is twenty-seven and in search of a suitable wife‚ to Pinye Salzman‚ who has advertised his services as a matchmaker in a local Jewish newspaper. Leo has spent six years in study‚ with no time for developing a social life. Inexperienced with women‚ he finds the traditional route of obtaining a bride appealing‚ an honorable arrangement from which
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Bulgakov’s Use of Magic Realism The Russian novel‚ Master and Margarita‚ was written in an environment of strict government control in early twentieth century‚ where even the presence of the manuscript in the author’s own house was something to fear. Bulgakov is believed to have burned the manuscript‚ only to re-write it later from memory. He must have felt a writer’s responsibility to record the historic issues that contradicted the country’s regime and atheistic religious stance. In magic realism‚ many
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Protostar This is the stage in which the star begins to form after the collapse of the interstellar cloud. It happens in small molecular clouds that can be referred to as dense cores. In the beginning the dense core has a level of balance between its own gravitational forces (self-gravity)‚ and both the magnetic pressure‚ and gas pressure. The self-gravity acts to compress the dense core‚ while the gas‚ and magnetic pressures act to inflate it. The core’s self-gravity will eventually overwhelm it
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Song: Go and catch a falling star The poem “Song: Go and catch a falling star” was written by the cherished poet‚ John Donne. In this satirical poem‚ through a series of images‚ he conveys his belief on the faithfulness‚ or rather the unfaithfulness of women. Donne’s use of diction‚ allusion‚ imagery‚ sound effects‚ and tone create a unique richness in the language of the poem‚ which make it enjoyable to read. The denotations and connotations of this poem create more depth and richness. In
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