known as critical mass. At this point the gas will be hot enough to glow. but since there is still a large amount of dust surrounding the gas there isn’t much radiation given off in the visible spectrum(light humans can see) Brown Dwarf: A brown dwarf is when a protostar has not been able to reach critical mass‚ this means that fusion was never able to begin‚ these objects range in size from 13 90 times the mass of Jupiter. Main Sequence: Most stars in the universe for most of
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equilibrium? gravity; nuclear fusion‚ in the form of pressure 6. How hot a star is relates to the ______________ it emits. ___________ stars are hotter and ______________ stars are cooler. color; blue; red 7. What are red dwarfs? Why are they not seen in the night sky? Red dwarfs are small‚ common stars with lower surface temperature. They are not seen in the night sky because they are dim stars. 8. __________ is the fundamental thing that drives the life history of stars. Mass 9. Why do more massive
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was Ptolemy’s cosmos like? How did he explain retrograde motion? - Each planet moves around Earth on a small circle that turns upon a larger circle. A planet following this motion traces a loop as seen from Earth‚ with the backward proportion of the loop mimicking apparent retrograde motion. 7. What are epicycles and deferents? - Each planet moves around Earth on a small circle that turns upon a larger circle. A planet following this motion traces a loop as seen from Earth‚ with the backward
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relation of mass to energy (E = mc2‚ or energy [E ] equals mass [m] times the speed of light [c] squared). Indian-born American astrophysicist Subrahmanyan Chandrasekhar (1910-1995) first articulated the evolution of stars into supernovae‚ white dwarfs‚ and neutron stars; and predicted the conditions required for the formation of black holes‚ which were subsequently confirmed by observation in the last years of the twentieth century. Stellar mechanics The material between stars occurs in clouds
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How did the universe originate and evolve to produce the galaxies‚ stars‚ and planets we see today? How did we get here? In order to understand how the Universe has changed from its initial simple state following the Big Bang (only cooling elementary particles like protons and electrons) into the magnificent Universe we see as we look at the night sky‚ we must understand how stars‚ galaxies and planets are formed. There are many questions associated with the creation and evolution of the major
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The sun is a star. It is the star round which the earth and other planets revolve. In a way‚ we can say that sun is the head of solar family or solar system. Compared with the millions of other stars‚ the sun is a medium sized star and of average brightness. The sun appears to be larger and brighter because it is much more nearer to the earth than any other star. Thus‚ the star nearest to the earth is the sun. Though sun is the nearest star to the earth‚ even then it is at a distance of 150 x 106
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a very dull red hue‚ but again this was probably due to us just viewing it with the naked eye. Dr. Miller also explained a lot about the star constellations‚ but one thing that stuck out to me was that the star Sirus‚ has a cousin that is a white dwarf star. The third event was a presentation by Professor Alan Marscher. His presentation was on Black Holes‚ Jets‚ Gamma Rays and Active Galactic Nuclei. Alan started off by talking about black holes and their makeup and general structure. He did explain
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ENGLISH CLASS 2013 PLANET EARTH OUR PLANET TEACHER ERICKA SANTIESTEBAN COLEGIO LA ROCA Earth is the third planet from the Sun‚ and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System’s four terrestrial planets. It is sometimes referred to as the world‚ the Blue Planet‚ or by its Latin name‚ Terra. Earth formed approximately 4.54 billion years ago‚ and life appeared on its surface within one billion years. Earth’s biosphere then
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to the solar system to affect Earth‚ which is not likely. If a black hole with the same mass as the sun were to replace the sun‚ Earth would not fall in. The black hole with the same mass as the sun would keep the same gravity as the sun. The planets would still orbit the black hole as they orbit the sun now. Will the Sun Ever Turn Into a Black Hole? The sun does not have enough mass to collapse into a black hole. In billions of years‚ when the sun is at the end of its life‚ it will become
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Planet Fitness is a vastly growing franchisor in the fitness center industry. As an investor‚ it would be best to open up a new franchise in Newton‚ Massachusetts. Planet Fitness is continuously growing and has added 209 stores since 2015. We feel it would be best to open a new facility in a prime location where an affordable‚ yet practical gym best fits the demographic. Implementing a fancy gym that costs hundreds of dollars a month with over-the-top amenities is unnecessary. Newton is a hard
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