cosmological constant in his General Theory of Relativity. At this time‚ we didnt even know that there are galaxies out there! What we know was that apart from our sun and planets‚ there are millions of stars everywhere and many nebula‚ which were considered as gaseous clouds. Even the best telescopes of the time couldnt reveal that many of the gaseous clouds were infect group of stars galaxies contains million of stars. It is very surprising to me that while formulating General Theory of Relativity
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Chapter 15 (23): Black Holes a) 15.1: Principle of equivalence (1) The Principle of equivalence: Idea that life in a free falling laboratory and life with no gravity is equivalent. ii) 15.1.2 Gravity or acceleration: (1) In space shuttle it appears as though there is no gravity or force but in reality everything from the shuttle to the pencil inside the shuttle is continuously falling but cause it’s all at the same speed it appears as force less. b) 15. 2 Space-time and gravity (1) Einstein
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Fabio Soto English composition 2 LIBRARY SCAVENGER HUNT Answer the following questions using library or online sources. Respond to each question with one or two complete‚ correct sentences. Document your sources using MLA documentation guidelines. Reference the Works Cited document located in Week 5’s Assignment instructions to complete questions 1-10. 1. Who was president of the United States when the Federal Reserve was created? ANSWER: When the Federal Reserve was created the
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word cosmos? 2. How many stars are in the Milky Way Galaxy? 3. How far across is the Milky Way Galaxy? 4. Where is the Sun located in the Milky Way Galaxy? 5. What is the age of the universe thought to be? 6. What is nuclear fusion? 7. Why does Carl Sagan say we are made of star stuff? 8. What is the Sun mainly made of? 9. What is an astronomical unit? Parsec? Light year? 10. What important discovery did Hubble make about distant galaxies that led us to the conclusion that the universe is
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the beginning of the 20th century‚ physicists generally had a strong bias toward the idea that the universe was essentially unchanging. However ‚this theory does not fit with the universe phenomena which change from minute to minute‚ and stars and galaxies might be born and die .In this report ‚ we will look at one of the famous theories and greatest discoveries of this century . 1. Background 1. What is the Big Bang Theory The big bang is a theory which describes how our universe started
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Universe and Our Galaxies The Universe and Our Galaxies Examples of Elliptical (Messier 87 ) and Spiral Galaxies (NGC 3559) Examples of Elliptical (Messier 87 ) and Spiral Galaxies (NGC 3559) Edwin Hubble was one of the first people to actually realise what a galaxy is‚ the measurement of the “Hubble Tuning Fork” Classification scheme shows how round or rightly wound their “arms” are. E0 means that an elliptical galaxy is extremely round‚ whilst E7 is flat. However not all galaxies can be classified
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well as larger objects like our galaxy. In fact it is this indirect method of observation that has led us to the discovery of extra-solar planets. As it turns out this indirect method has brought about the discovery of a new and strange material that may well constitute ninety percent of our universe. Where once we believed space was nothing more than random stars and planets and gas floating endlessly in a sea of nothingness‚ we now have proof that our galaxy and countless others are floating
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star‚ astronomers observe many of the billions of stars around us and see them at different stages of life‚ therefore putting together a star’s evolution. It is a star among hundreds of billions of stars within our Milky Way Galaxy‚ and our galaxy is one of billions of galaxies in the universe. The death of the star is possibly the most interesting aspect of its entire life cycle. The death of a star occurs in phases. Not all stars will visit each phase depending on the size of the star. There are
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dimmer‚ which means they are getting closer instead of farther away. They were able to show that dark energy has an influence on light particles and photons. When a photon passes a galaxy it falls into the gravitational pull‚ and the dark energy because it repulses gravity makes the photon pass right through the galaxy with even more energy than when it entered. These findings make dark energy completely independent of the supernova observations. Astronomers have found the first direct evidence
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Luka Klikovac When the dust unsettles A shroud of grainy particles veils the heart of most galaxies‚ helping to make stars‚ planets and even us. But where did it all come from? Stuart Clark investigates T HE universe‚ it seems‚ has the same problem I have. Dust‚ everywhere. Looking round as I type this‚ I find myself wondering where on earth it all comes from. Just how does it accumulate without invitation on every surface‚ in every nook and cranny? Increasingly‚ astronomers can
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