Science of Stars Nancy Vasquez SCI 151 September 23‚ 2012 Robert Austin Abstract When discussing the Solar System‚ the planets are what are mostly thought of. Many other objects orbit around the sky such as stars‚ asteroids and meteors. Stars have many properties of which will be discussed throughout this paper. Properties of Stars * Stars are determined by their brightness‚ distance‚ luminosity‚ radius‚ chemical composition and temperature (Strobel‚ 2007). * When determining
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constant to his equations that made his calculations consistent with a static universe. (Expanding universe‚ n.d.) Einstein admitted this was a great mistake when Edwin Hubble demonstrated that the more distant a galaxy is from earth‚ the greater its redshift and therefore the faster it moves away from us. The velocity of galaxies that are moving away from us can be given by an equation known as Hubble’s law: v = H*d. (Martin White‚ n.d.) Where V represents velocity‚ H represents Hubble’s constant and
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measured in watts (1 watt = 1 joule/s). Wavelength - The distance between adjacent peaks (or troughs) of a wave. Frequency – The rate at which peaks of a wace pass by a point‚ measured in units of 1/s often called cycles per second or hertz. Redshift – (Doppler) A Doppler shift in which spectral features are shirted to longer wavelengths‚ observed when an object is moving away from the observer. Focal plane – The place where an image created by a lens or mirror is in focus. Light pollution
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1. Describe the nuclear fusion reaction that occurs in stars. Page 294 Stars are made primarily of the almond hydrogen the most common material universe. As a star forms‚ gravity pulls the hydrogen into a dense ball that heats up. Electrons are torn from the hydrogen and other atoms‚ creating a plasma made up primarily of protons (the nucleus of the hydrogen atom) and electrons. Normally‚ protons would repel each other. As matter accumulates ending the new star however‚ the protons move
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What is the mysterious dark energy that’s causing the expansion of the universe to accelerate? Is it some form of Einstein’s famous cosmological constant‚ or is it an exotic repulsive force‚ dubbed "quintessence‚" that could make up as much as three-quarters of the cosmos? Scientists from Lawrence Berkeley National Laboratory (Berkeley Lab) and Dartmouth College believe there is a way to find out. | | | | The SuperNova/Acceleration Probe‚ SNAP‚ is a satellite designed to study dark energy
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“Science does not know it’s debt to imagination.” “Men love to wonder‚ and that is the seed of science.” Ralph Waldo Emerson was right on point when he said these two statements. There have been numerous great scientists that have come in and out of this world‚ and there are many to still come. When Emerson said these two quotes‚ he was talking about all of these scientists. The world we live in today would not be the same without the imagination and wonder of scientists; therefore we owe everything
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Edwin Hubble In this adventure they look will be taken at Edwin Hubble. This look will be into three major areas of his life. His personal life how he grew up‚ whether he married and had children. Also‚ an investigation will be taken to look into his background specifically how he got started in the field of astronomy. Finally‚ there will be a look into what contributions he has made to the field of astronomy. Edwin Hubble would forever change the way astronomy was understood. He would also be a
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of different elements produces varying signatures within the background spectrum. D) The overall structure of the universe is very uniform‚ but intervening gas between us and the era of nuclei absorbs wavelengths depending on the composition and redshift of the gas. E) Dark matter consisting of WIMPs greatly smooths out the spectrum‚ but the small patches of "light" matter create peaks in the spectrum. 70) A star of spectral type O lives approximately how long on the main sequence? A) 10‚000 years
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PHYS1160 A black hole is a point in space where there is extreme gravitational pull‚ so extreme that light itself cannot escape. The strength of gravity is so strong due to the fact that an immense amount of matter has been contained in a small space. The existence of black holes was first theorized by John Mitchell in 1783. Mitchell accepted Newton’s laws of gravity and suggested that light escaping from the surface of a star would have its speed reduced due to the gravitation pull of the star
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This page is intentionally left blank. The Universe is Only Spacetime Particles‚ Fields and Forces Derived from the Simplest Starting Assumption John A. Macken Santa Rosa‚ California john@onlyspacetime.com Original Draft – February 2010 Revision 7.0 – January 2013 ©2010‚ 2012 i Dedication: I dedicate this book to my wife‚ Enid‚ who has encouraged me and tolerated my idiosyncrasies over the years. Acknowledgments:
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