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The Lives of Stars From Birth Through Middle Age (Chapter 9)
The Lives of Stars From Birth Through Middle Age (Chapter 9)

... 1. A helium-3 atom and a helium-4 atom combine to form a beryllium-7 (four protons and three neutrons) and a gamma ray. 2. A beryllium-7 atom captures an electron to become lithium-7 atom (three protons and four neutrons) and a neutrino. 3. The lithium-7 combines with a proton to form two helium-4 a ...
The Scale of the Cosmos
The Scale of the Cosmos

... a star, large enough to be spherical and to have cleared its orbital zone of other objects 7. Star – a self-luminous ball of has gas that generates its own energy by nuclear fusion ...
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Name: Period : ______ The Universe – Life and Death of a Star How

... 1. How many stars are in our galaxy? 2. “The Pillars of Creation are a stellar ____________________. New stars are in the process of being ______________ in the central regions.” 3. The Pillars are towering clouds of _________________ _________________________. 4. What element is the key component i ...
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the life cycle of stars

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TU Muscae and the Early-type Overcontact Binaries
TU Muscae and the Early-type Overcontact Binaries

... High-mass stars evolve faster than low mass stars But in Algols the less massive star is evolved. How is that possible? Mass transfer! The low mass star was once the more massive star, evolved, and dumped matter onto the other star, eventually reversing the mass ratio. ...
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25drake6s

... The Drake Equation In 1961, astronomer Frank Drake developed a formula to predict the number of intelligent species in our galaxy that we could communicate with right now ...
Fusion in the Sun
Fusion in the Sun

... 5. Nebula/Supernova- small mass stars lose their outer shell and return to a nebula, large mass stars explode into a supernova. 6. White Dwarf/Black Hole- the core of small mass stars slowly burns out, the core of large mass stars caves in on ...
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PowerPoint - UCSD Department of Physics

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When Stars Blow Up

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Astronomy Review (Cope) 64KB Jun 09 2013 08:13:01 PM

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ASTR2050 Spring 2005 • In this class we will cover: Brief review
ASTR2050 Spring 2005 • In this class we will cover: Brief review

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Astronomy Learning Objectives and Study Questions for Chapter 12

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... 10. If astronomers observe a star’s spectrum shifted toward the red end, how is the star moving relative to Earth? ...
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THE BIRTH AND DEATH OF A LOW/MEDIUM MASS STAR

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Starry Starry Night Vocabulary
Starry Starry Night Vocabulary

... Artist: A person who creates art such as paintings, drawings or sculpture. Astronomy: The study of objects outside the earth’s atmosphere, including planets and stars. Author: A person who writes a story or a book. Aztecs: An ancient civilization in Mexico. Aztecs studies the stars, noticed that the ...
Astronomy - The-A-List
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300 MHz - 3 GHz Yes, we`re interested

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Astronomy Honors Mid term Study Guide

... Directions: Do not re-write each question. Number and write the answer to each question on lose leaf. Only hand written notes will be permitted for use on the mid term exam and will collected at the end of the test. Disclaimer: Below you will find a list of questions and vocabulary terms that pertai ...
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Sky News – March 2015 The Realm of the Galaxies

... Familiar winter constellations like Orion begin to set in the west with the onset of darkness, bringing the spring constellations of Leo, Virgo, Coma Bernices and Ursa Major into prominence. It is within these that hosts of galaxies reside. The North Galactic Pole, the point in the sky directly over ...
Sun, Stars and Planets [Level 2] 2015
Sun, Stars and Planets [Level 2] 2015

... Sun, Stars and Planets [Level 2] 2015 - 2016 Dr David Clements Course Aims: To become familiar with the structure and evolution of the Sun and other stars. To become familiar with the key physical principles that determine the current state of the planets in our own Solar System, and that allow us t ...
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... emit high energy photons that are absorbed by the gas. The heated gases produce an emission spectrum and the particular wavelength of the red light of the nebula is 656nm. The exact wavelength of Hydrogen. ...
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Future of an expanding universe

Observations suggest that the expansion of the universe will continue forever. If so, the universe will cool as it expands, eventually becoming too cold to sustain life. For this reason, this future scenario is popularly called the Big Freeze.If dark energy—represented by the cosmological constant, a constant energy density filling space homogeneously, or scalar fields, such as quintessence or moduli, dynamic quantities whose energy density can vary in time and space—accelerates the expansion of the universe, then the space between clusters of galaxies will grow at an increasing rate. Redshift will stretch ancient, incoming photons (even gamma rays) to undetectably long wavelengths and low energies. Stars are expected to form normally for 1012 to 1014 (1–100 trillion) years, but eventually the supply of gas needed for star formation will be exhausted. And as existing stars run out of fuel and cease to shine, the universe will slowly and inexorably grow darker, one star at a time. According to theories that predict proton decay, the stellar remnants left behind will disappear, leaving behind only black holes, which themselves eventually disappear as they emit Hawking radiation. Ultimately, if the universe reaches a state in which the temperature approaches a uniform value, no further work will be possible, resulting in a final heat death of the universe.
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