Mars: Crash Course Astronomy #15

The fourth planet from the sun and the outermost of the terrestrial planets, Mars has long been a popular spot for missions and imagination. Phil walks you through the planet's topography, core, and features. We'll take a look back at Mars's past and makes predictions for its future, including the possibilities for human life.Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crashcourse-astronomy-poster--Chapters:Introduction: Mars 00:00Mars is Red, Rusty, and Dusty 1:19Surface Features of Mars 2:01Mars's Polar Ice Caps 3:29Martian Atmosphere 3:50Martian Moons: Deimos and Phobos 5:09Is There Water on Mars? 6:03Was There Life on Mars? 7:09Martian Missions 8:01Review 9:26--PBS Digital Studios: http://youtube.com/pbsdigitalstudiosFollow Phil on Twitter: https://twitter.com/badastronomerCrash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourseWant to find Crash Course elsewhere on the internet?Facebook - http://www.facebook.com/YouTubeCrashCourseTwitter - http://www.twitter.com/TheCrashCourseInstagram - https://www.instagram.com/thecrashcourse/CC Kids: http://www.youtube.com/crashcoursekids--PHOTO/VIDEO SOURCESPlanets https://en.wikipedia.org/wiki/Solar_System#/media/File:Planets2013.jpg [credit: Wikimedia Commons]Terrestrial Planets https://en.wikipedia.org/wiki/Venus#mediaviewer/File:Terrestrial_Planets_Size_Comp_True_Color.png [credit: Wikimedia Commons]Curiosity’s view of martian soil https://en.wikipedia.org/wiki/Martian_soil#/media/File:PIA17944-MarsCuriosityRover-AfterCrossingDingoGapSanddune-20140209.jpg [credit: NASA/JPL-Caltech/MSSS]Mars Topography http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA02820 [credit: NASA/JPL]Tharsis http://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Tharsis_-_Valles_Marineris_MOLA_shaded_colorized_zoom_32.jpg/1280px-Tharsis_-_Valles_Marineris_MOLA_shaded_colorized_zoom_32.jpg [credit: NASA / JPL-Caltech / Arizona State University]Olympus Mons http://upload.wikimedia.org/wikipedia/commons/0/00/Olympus_Mons_alt.jpg [credit: NASA]Valles Marineris https://en.wikipedia.org/wiki/Valles_Marineris#/media/File:Mars_Valles_Marineris.jpeg [credit: NASA/USGS]Cappuccino swirls at Mars south pole http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2015/02/cappuccino_swirls_at_mars_south_pole/15243840-1-eng-GB/Cappuccino_swirls_at_Mars_south_pole.jpg [credit: ESA/DLR/FU Berlin / Bill Dunford]The Mars Reconnaissance Orbiter image 1 http://static.uahirise.org/images/2015/details/cut/ESP_039148_1980.jpg [credit: NASA]The Mars Reconnaissance Orbiter image 2 http://photojournal.jpl.nasa.gov/figures/PIA19127_fig1.jpg [credit: NASA/JPL]Dunes, image 1 http://mars.jpl.nasa.gov/gallery/press/20090317a/ESP_011909_1320.jpg [credit: NASA/JPL-Caltech/University of Arizona]Dunes, image 2 http://www.nasa.gov/sites/default/files/pia17981.jpg [credit: NASA/JPL-Caltech/Univ. of Arizona]Serpent Dust Devil http://www.nasa.gov/mission_pages/MRO/multimedia/pia15116.html [credit: NASA/JPL-Caltech/Univ. of Arizona]Tattooed Mars http://www.nasa.gov/multimedia/imagegallery/image_feature_1500.html [credit: NASA, HiRISE, MRO, LPL (U. Arizona)]Avalanche http://www.uahirise.org/ESP_016228_2650 [credit: NASA/JPL/University of Arizona]Deimos https://en.wikipedia.org/wiki/Moons_of_Mars#/media/File:Deimos-MRO.jpg [credit: NASA/JPL-Caltech/University of Arizona]Phobos https://en.wikipedia.org/wiki/Moons_of_Mars#/media/File:Phobos_colour_2008.jpg [credit: NASA/JPL-Caltech/University of Arizona]Mars' Moon Phobos Eclipses the Sun, as Seen by Curiosity https://www.youtube.com/watch?v=OyZoD7BRTtg [credit: NASA Jet Propulsion Laboratory]Material Excavated by a Fresh Impact and Identified as Water Ice http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA12220 [credit: NASA/JPL-Cal