The Moon: Astronomy #12

Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation.

This episode is brought to you by Squarespace: http://www.squarespace.com/crashcourse

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Table of Contents
Many Millions of Moons 0:27
Big Impact on Little Earth 3:42
Craters and Maria 2:15
Water on the Moon? H2O Yeah! 8:06

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PHOTOS/VIDEOS
Moon Phase 47.7% http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=3894 [credit: NASA/Goddard Space Flight Center Scientific Visualization Studio]
The Blue Marble http://visibleearth.nasa.gov/view.php?id=57723 [credit: Credit: NASA Goddard Space Flight Center Image by Reto Stöckli]
Dramatic Moonset http://www.eso.org/public/images/potw1023a/ [credit: G.Gillet/European Southern Observatory]
Structure of the Moon: http://en.wikipedia.org/wiki/Moon#mediaviewer/File:Moon_diagram.svg [credit: Kelvin Song via WikiMedia Commons]
Crater Science Investigations: http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10792 [credit: NASA/Goddard Space Flight Center]
Lunar crater Daealus http://commons.wikimedia.org/wiki/File:Lunar_crater_Daedalus.jpg [credit: NASA]
Mare Humorum http://commons.wikimedia.org/wiki/File:Mare_Humorum_-_LROC_-_WAC.JPG [credit: NASA]
Luna 3: http://nssdc.gsfc.nasa.gov/imgcat/html/object_page/lu3_1.html [credit: NASA]
Farside!: http://lroc.sese.asu.edu/posts/298 [credit: NASA/GSFC/Arizona State University]
Theia Earth Collision: http://io9.com/the-incredibly-violent-history-of-earths-moon-1098565110 [credit: Ron Miller, used with permission]
Earth Seen From Early Moon: http://io9.com/the-incredibly-violent-history-of-earths-moon-1098565110 [credit: Ron Miller, used with permission]
Moon Struck: http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=10931 [credit: NASA's Goddard Space Flight Center]
Tycho: http://www.nasa.gov/images/content/417417main_tychofull-20100115-full.jpg [credit: NASA/Goddard/Arizona State University]
Double crater on the moon: http://www.esa.int/spaceinimages/Images/2006/09/Double_crater_on_the_Moon [credit: ESA/SPACE-X (Space Exploration Institute)]
Stream of Craters: http://www.nasa.gov/mission_pages/LRO/multimedia/lroimages/lroc_20090810_craterstream.html [credit: NASA/Goddard Space Flight Center/Arizona State University]
Full Moon: http://en.wikipedia.org/wiki/Moon#mediaviewer/File:FullMoon2010.jpg [credit: Gregory H. Revera]
Rille on the valley floor, photographic mosaic from Apollo 15: http://en.wikipedia.org/wiki/Schroter%27s_Valley#mediaviewer/File:Vallis_Schroteri.jpg [credit: NASA]
New Views of Lunar Pits: http://lroc.sese.asu.edu/posts/230 [credit: NASA/GSFC/Arizona State University]
Crater Erlanger: http://www.nasa.gov/mission_pages/Mini-RF/multimedia/erlanger_crater.html [credit: NASA/GSFC/Arizona State University]