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Moon Phases: Crash Course Astronomy #4

In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases. Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crash... -- Chapters: Why does the Moon Have Phases? 00:00 New Moon 2:26 Waxing Crescent 4:17 First Quarter 4:35 Waxing Gibbous 5:15 Full Moon 5:32 Waning Gibbous, Third Quarter, and Waning Crescent 6:26 Earthshine 7:20 Review 8:58 -- 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://en.wikipedia.org/wiki/Moon#med... https://solarsystem.nasa.gov/multimed... http://svs.gsfc.nasa.gov/vis/a000000/... http://svs.gsfc.nasa.gov/vis/a000000/... http://svs.gsfc.nasa.gov/vis/a000000/... http://svs.gsfc.nasa.gov/vis/a000000/... http://svs.gsfc.nasa.gov/vis/a000000/... http://svs.gsfc.nasa.gov/vis/a000000/... http://svs.gsfc.nasa.gov/vis/a000000/... http://svs.gsfc.nasa.gov/vis/a000000/... http://en.wikipedia.org/wiki/Moon#med... http://global.jaxa.jp/press/2008/04/i... http://global.jaxa.jp/press/2008/04/2... http://www.esa.int/Our_Activities/Ope... http://commons.wikimedia.org/wiki/Fil... https://www.flickr.com/photos/badastr...