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Introduction to Astronomy: Crash Course Astronomy #1

Welcome to the first episode of Crash Course Astronomy. Your host for this intergalactic adventure is the Bad Astronomer himself, Phil Plait. We begin with answering a question: "What is astronomy?" Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crash... -- Chapters: Introduction 00:00 What is Astronomy? 3:00 Who Studies Astronomy? 3:50 Origins of Astronomy 5:27 Astrology vs Astronomy 6:19 Geocentrism 7:51 Revolutions in Astronomy 8:58 Astronomy Today 10:26 Review 11:29 -- PBS Digital Studios:    / pbsdigitalstudios   Follow Phil on Twitter:   / badastronomer   Crash Course is on Patreon! You can support us directly by signing up at   / crashcourse   Want to find Crash Course elsewhere on the internet? Facebook -   / youtubecrashcourse   Twitter -   / thecrashcourse   Instagram -   / thecrashcourse   CC Kids:    / crashcoursekids   -- Photos: http://commons.wikimedia.org/wiki/Fil... http://en.wikipedia.org/wiki/Earth%27... http://en.wikipedia.org/wiki/Geomagne... http://en.wikipedia.org/wiki/Saturn#m... http://en.wikipedia.org/wiki/243_Ida#... http://commons.wikimedia.org/wiki/Fil... http://solarviews.com/raw/comet/kuipe... http://solarviews.com/cap/comet/kuipe... http://en.wikipedia.org/wiki/List_of_... http://www.slate.com/blogs/bad_astron... http://www.slate.com/blogs/bad_astron... http://en.wikipedia.org/wiki/Black_ho... http://commons.wikimedia.org/wiki/Fil... http://www.slate.com/blogs/bad_astron... http://upload.wikimedia.org/wikipedia... http://www.slate.com/blogs/bad_astron... http://www.esa.int/spaceinimages/Imag... http://en.wikipedia.org/wiki/Andromed... http://en.wikipedia.org/wiki/Triangul... http://en.wikipedia.org/wiki/Hubble_S... http://www.slate.com/blogs/bad_astron... http://www.slate.com/blogs/bad_astron... http://en.wikipedia.org/wiki/Nicolaus... http://en.wikipedia.org/wiki/Tycho_Br... http://en.wikipedia.org/wiki/Johannes... http://en.wikipedia.org/wiki/Isaac_Ne... http://en.wikipedia.org/wiki/Galileo_... http://www.slate.com/blogs/bad_astron...