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Stars Power Point
Stars Power Point

... • Continuous Spectrum – shows all the colors – a hot, solid object, such as the glowing wire inside a light bulb • A Spectrograph is used to break a star’s light into a spectrum ...
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... Measuring the Stars How big are stars? How far away are they? How bright are they? How hot? How old, and how long do they live? What is their chemical composition? How are they moving? Are they isolated or in clusters? By answering these questions, we not only learn about stars, but about the struc ...
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Life Cycle of Stars

Stars - Madison County Schools
Stars - Madison County Schools

... • Gravity may cause the nebula to contract • Matter in the gas cloud will begin to condense into a dense region called a protostar • The protostar continues to condense, it heats up. Eventually, it reaches a critical mass and nuclear fusion begins. • Begins the main sequence phase of the star • Most ...
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Lecture 19 Review

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PY1052 Problem Set 9 – Autumn 2004 Solution

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lecture19 - Stony Brook University

... In last lecture, we saw a Type II supernova blowing off its outer layers in a gigantic explosion, due to a shock wave that bounced off the central neutron core. The supernova lights up the sky and seeds the neighborhood with heavy elements used for complex life. What’s left of the star after the exp ...
Linking Asteroids and Meteorites through Reflectance
Linking Asteroids and Meteorites through Reflectance

... • Oxygen-neon-magnesium white dwarfs can also form (hot enough to fuse carbon but not neon) • Helium white dwarfs can form ...
Midterm Exam - 2 Set B Solution
Midterm Exam - 2 Set B Solution

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... Please indicate the best answer to the following question on the answer sheet provided. 1. Of all the stars that are currently on the main sequence, which spectral type would be least abundant? a. A, b. B, c. K, d. M 2. What mechanism is responsible for the twisting of the Sun's magnetic filed lines ...
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... Early-type stars have intense and highly supersonic winds. Mass loss rates - 10-6 to 10-5 solar masses per year. For compact star - early star binary, compact star accretes if ...
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... red giant, and finally, a white dwarf.  A more-massive star: begins as a nebula, becomes a protostar, a main-sequence star, a very massive star, a supergiant, a supernova, and finally, either a neutron star (pulsar) or a black hole. ...
Chapter 16 - "The Universe"
Chapter 16 - "The Universe"

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Death of massive stars

... In November 1967, Jocelyn Bell found a new, regular pattern in data from a radio telescope. Originally she and her team suspected they had made the first detection of alien life, and named it LGM 1. What they really found was the first pulsar. ...
1st EXAM VERSION C - Department of Physics and Astronomy
1st EXAM VERSION C - Department of Physics and Astronomy

dtu7ech13 - Fort Thomas Independent Schools
dtu7ech13 - Fort Thomas Independent Schools

... cease nuclear fusion. Its remnant white dwarf will dim over the succeeding billions of years. What is a nova? A nova is a relatively gentle explosion of hydrogen gas on the surface of a white dwarf in a binary star system. What are the origins of the carbon, silicon, oxygen, iron, uranium, and other ...
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Astronomy Webquest _2 STARS
Astronomy Webquest _2 STARS

... Stars are formed in clouds of gas and dust, known as ________________. _____________ _______________________ at the center (or core) of stars provides enough energy to make them shine brightly for many years. The exact lifetime of a star depends very much on its ______________. Very large, massive s ...
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Chapter 19 Notes Stars Stars are bright balls of gas that are trillions

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Thought Question

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Planet Found In Nearest Star System To Earth
Planet Found In Nearest Star System To Earth

... Alpha Centauri B is very similar to the Sun but slightly smaller and less bright. The newly discovered planet, with a mass of a little more than that of Earth [3], is orbiting about six million kilometres away from the star, much closer than Mercury is to the Sun in the Solar System. The orbit of th ...
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Dyson sphere

A Dyson sphere is a hypothetical megastructure that completely encompasses a star and hence captures most or all of its power output. It was first described by Olaf Stapledon in his science fiction novel, ""Star Maker"". The concept was later popularly adopted by Freeman Dyson. Dyson speculated that such structures would be the logical consequence of the long-term survival and escalating energy needs of a technological civilization, and proposed that searching for evidence of the existence of such structures might lead to the detection of advanced intelligent extraterrestrial life. Different types of Dyson spheres correlate with information on the Kardashev scale.Since then, other variant designs involving building an artificial structure or series of structures to encompass a star have been proposed in exploratory engineering or described in science fiction under the name ""Dyson sphere"". These later proposals have not been limited to solar-power stations. Many involve habitation or industrial elements. Most fictional depictions describe a solid shell of matter enclosing a star, which is considered the least plausible variant of the idea (see below). In May 2013, at the Starship Century Symposium in San Diego, Dyson repeated his comments that he wished the concept had not been named after him.
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