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Cosmology and extragalactic astronomy Mat Page Mullard Space Science Lab, UCL Revision Lecture
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Classifying galaxies Big Bang Active galaxies Our Local Group Random $ 200 $ 200$200 $ 200 $400 $ 400$400 $ 400 $600 $ 600$600 $ 600 $ 600 $800 $
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Chapter 16 The Milky Way Galaxy 16.1 Overview n How many stars are in the Milky Way? – About 200 billion n How many galaxies are there? – billions
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Galaxy Classification
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Galaxies Beyond the Milky Way. Types of Galaxies There are Three main types of Galaxies: 1.Spiral (like the Milky Way) 2. Elliptical (Round without internal
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