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The top documents tagged [galaxiessome galaxies]
What is a galaxy? A galaxy is a system containing millions or even billions of stars. We estimate that there are 50 billion to 100 billion galaxies in
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Chapter 24 Galaxies. Beyond the Milky Way are billions of other galaxies Some galaxies are spiral like the Milky Way while others are egg-shaped / elliptical
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El universo: Edad: 13.7 millardos de años (1 % de error) Expansión: 71 km/sec/Mpc actualmente (5 % de error) 73% = Energía oscura 23% = materia oscura
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Objectives Describe how astronomers classify galaxies. Identify how galaxies are organized into clusters and superclusters. Describe the expansion of
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Galaxies. Galaxies2 Introduction Beyond the Milky Way, the visible Universe contains more than ten billion galaxies Some galaxies are spiral like the
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Galaxies The Basic Element of Cosmology. Warm Up Please complete a K-W-L chart for the topic of galaxies
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Most of the power of galaxies come from the stars Almost all nearby galaxies Some galaxies have very bright sources right at the center Can be as bright
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Chapter 24
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Active Galaxies
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