nearby stars is as predicted from theoretical studies based on hydrogen bomb research. 2. The speed of light indicates how fast light can travel in a vacuum. (6 points) 1. A. What star is closest to our solar system? (3 points)The Alpha Centauri system is located 1.34 parsecs or 4.37 light years from the Sun‚ making it the closest star system to our Solar System. B. If you could travel at the speed of light‚ how long would it take to travel from our solar system to the nearest star? (3 points)
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Astronomer Essay 4/12/2011 JMJ Dr. Debra Fischer – Astronomer An astronomer is an astrophysicist who studies stars‚ planets and galaxies. Astronomers use the laws of physics to investigate the matter and energy of celestial bodies. They then apply the research findings to solve space navigation and communication problems and even discover new planets and stars. In 1512‚ Copernicus theorized that the planets orbit the sun and the race to uncover new planets began. Historically‚ most
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Astronomers have been studying the stars since the first person laid eyes upon the night sky. Thousands of years of observations and recording all of the events have all contributed to the vast knowledge we enjoy today. The purpose of this paper is to describe the creation of stars‚ destruction/ life cycle of stars and our star the sun. Within this last century‚ we have been fortunate to have the great minds of Einstein and Hubble who made valuable contributions to our current understanding. Also
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showing a star changes over the course of the time. Also‚ it relates to the mass‚ ages‚ sizes of the stars. Also‚ I used the Hertzsprung-Russell (H-R) diagram concept to classify the stars and find the Main Sequence. When the stars are hotter and more luminous‚ they main sequence tends to follow a band going from the bottom right to the top left at the diagram. This concept can help to classify the stars‚ such as main sequence stars‚ red giant‚ blue giant‚ supergiant stars‚ virtually dead stars‚ and binary
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Earth to the Sun 3) Roughly how many stars are in the Milky Way Galaxy? A) 1 billion B) 100 trillion C) 100 million D) 10 billion E) 100 billion 4) Which of the following statements about the celestial sphere is not true? A) The celestial sphere does not exist physically. B) The "celestial sphere" is just another name for our universe. C) From any location on Earth‚ we can see only half the celestial sphere at any one time. D) When we look in the sky‚ the stars all appear to be located on the celestial
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governmental astronomy‚ and not completely disentangled from it until a few centuries ago in the Western World . In some cultures astronomical data was used for astrological prognostication. Ancient astronomers were able to differentiate between stars and planets‚ as stars remain relatively fixed over the centuries while planets will move an appreciable amount during a comparatively short time. Early history Early cultures identified celestial objects with gods and spirits. They related these objects (and
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1. Company – Four Seasons Hotel Company History: Four Seasons Hotel‚ Inc is a Canadian-based international luxury‚ five-star hotel Management Company. It is one of the world’s most admired and successful luxury hotel chains‚ and has been named by Fortune consecutively for 16 years as one of “100 Best Companies to Work For” since 1998. The company was also awarded the “Best Business Hotel Chain Worldwide” by Business Traveller. Four Seasons Hotel was founded in the 1961 in Canada by Isadore Sharp
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Astronomy Today • Stars: how are they born‚ how do they live‚ how do they die ▫ How do different stars vary in these paths • Planets: how are they born ▫ What are the planets of our solar system like • Constellations are A. Stars that are nearby each other in space B. Stars that appear to be near each other‚ but may be very far apart The Sun • Our Sun is A. B. C. D. An average star A very small star A very big star Not a star‚ it’s the Sun Stars have Lives •
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towards you have a shorter wavelength (high pitch) 3.Explain how the Doppler effect gives us information about the movement of stars andgalaxies. Stars moving away from us are red shifted (light of longer wavelength) while stars movingtowards us are blue shifted (shorter wavelength) 4.- 5.Use a model to describe the expanding universe. Hubble’s law states the further away stars and galaxies were‚ the faster they were going.Thefact that most galaxies are moving away suggests that the universe is expanding
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Exoplanet or extrasolar planet that orbits a star other than earth’s sun was observed from the High Accuracy Radial velocity Planet Searcher instrument‚ or HARPS. By studying the properties of all the alien planets detected by HARPS so far‚ Astronomers found that approximately 40 percent of stars similar to the sun is host to at least one planet that is less massive than the gas giant Saturn. In other words‚ approximately 40 percent of sunlike stars have at least one low-mass planet orbiting around
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