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    Cosmic Redshift

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    SCIENCE-­‐1  TERM  PAPER   The new Physics of Cosmic Redshift Introduction:As we all know that light travels from source in a straight line(ray) according to concepts of classical ray optics. Redshift is the phenomenon by which light rays from distant stars that are observed on earth‚ show smaller frequency (longer wavelength) i.e. shifted towards the “red” end of the visible light region. This phenomenon of redshift is conventionally explained by the well-known “Doppler effect”. But

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    Hr Assesement

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    and what are the main characteristics? Quasars have little or no visible angular extent. Quasars have rapid light variations. Even high-redshift quasars have long jets. Features in quasar jets are observed to move outward. The angular size of visible nebulas surrounding some quasars does not diminish‚ and may even increase‚ with increasing redshift. Some high-redshift quasars are relatively bright. Chapter 26: 4. What is the origin of the Big Bang Theory? The history of the Big Bang theory

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    Redshift is when the observed wavelength of a galaxy moving away from us‚ is moving towards red on a wavelength spectrum and the farther the galaxy‚ the greater the redshift. In short‚ red shift shows that a galaxy moves faster as it gets farther from us‚ and “Since we cannot assume that we have a special place in the Universe‚ this is

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    Hello World

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    explanation of different color of light 2. The Hubble’s Law is an evolution of distance indicators‚ which used for calculated the distance of galaxies. It involves spherical distance compared with redshift of distant galaxies. Edwin Hubble found that the farther galaxies tend to have larger redshift than the

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    Parallax

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    Parallax * Parallax is the apparent movement of a nearby object when it’s viewed from 2 different points. * The farther the star the smaller the angle * Distance from one side of earth orbit to other is 300km. * distance from earth to sun is 1 AU * Can only measure close stars reliably. * Parallax is very small due to distance to stars. Makes it harder to measure accurately. * Relies on no assumptions‚ only earth’s geometry around the sun. * Uses simple trigonometry

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    The Milky Way

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    aided in the development of modern cosmology. In 1929‚ Hubble’s research of Andromeda and other galaxies led to a dramatic discover concerning the size of the universe. Based on the distance of a galaxy‚ Hubble discovered that the redshift was greater. A greater redshift indicates that the object is moving away and this led to the discovery that our universe is expanding. The Big Bang Theory The Big Bang Theory is a theory that states that the universe was once in a hot‚ dense form of matter

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    The Big Bang For decades the Big Bang theory has been the leading theory on the beginning of our universe. Alternate theories come and go‚ but mainly go. As new data and research are continually eliminating alternatives to the standard model of cosmology‚ the Big Bang just keeps getting stronger. Before discussing the alternate theories to the Big Bang theory‚ the basics of the early universe should first be understood. The main points opposing the theory are based around a few aspects that will

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    Science believes that all matter in the universe was at one point a super dense object that spontaneously exploded. Since the explosion the universe has been continuously expanding. This phenomena is scientifically measurable using the theory of redshift‚ which entails staring at a star and watching its colour change. Another measurable fact supporting this theory is the

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    Introduction to Cosmology Notes

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    2.4 Galaxy Clusters and Superclusters . . . 2.5 The Cosmic Distance Ladder . . . . . . 2.5.1 Trigonometric Techniques . . . 2.5.2 Standard Candles . . . . . . . . 2.5.3 Cepheid Variables . . . . . . . . 2.5.4 Other Standard Candles . . . . 2.5.5 Redshifts and the Hubble Flow 2.6 Galaxy Cluster Mass . . . . . . . . . . 2.7 More on Dark Matter . . . . . . . . . . 1 2 4 5 7 8 10 13 13 21 25 29 38 39 41 41 42 46 48 49 53 56 58 61 61 62 62 67 69 70 . . . . . . . . . . . . . . . . . . . . .

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    enormous rate‚ and observations have shown this to be true. This is in agreement with the Big Bang Theory as an expansion means there was a starting point and time for the universe. Through the Doppler Shift effect‚ galaxies have been observed to be in ‘redshift’ when viewed from Earth‚ meaning they are moving away from us.

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