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/crash...

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Chapters:
Introduction: Mars 00:00
Mars is Red, Rusty, and Dusty 1:19
Surface Features of Mars 2:01
Mars's Polar Ice Caps 3:29
Martian Atmosphere 3:50
Martian Moons: Deimos and Phobos 5:09
Is There Water on Mars? 6:03
Was There Life on Mars? 7:09
Martian Missions 8:01
Review 9:26
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PHOTO/VIDEO SOURCES
Planets https://en.wikipedia.org/wiki/Solar_S... [credit: Wikimedia Commons]
Terrestrial Planets https://en.wikipedia.org/wiki/Venus#m... [credit: Wikimedia Commons]
Curiosity’s view of martian soil https://en.wikipedia.org/wiki/Martian... [credit: NASA/JPL-Caltech/MSSS]
Mars Topography http://www.jpl.nasa.gov/spaceimages/d... [credit: NASA/JPL]
Tharsis http://upload.wikimedia.org/wikipedia... [credit: NASA / JPL-Caltech / Arizona State University]
Olympus Mons http://upload.wikimedia.org/wikipedia... [credit: NASA]
Valles Marineris https://en.wikipedia.org/wiki/Valles_... [credit: NASA/USGS]
Cappuccino swirls at Mars south pole http://www.esa.int/var/esa/storage/im... [credit: ESA/DLR/FU Berlin / Bill Dunford]
The Mars Reconnaissance Orbiter image 1 http://static.uahirise.org/images/201... [credit: NASA]
The Mars Reconnaissance Orbiter image 2 http://photojournal.jpl.nasa.gov/figu... [credit: NASA/JPL]
Dunes, image 1 http://mars.jpl.nasa.gov/gallery/pres... [credit: NASA/JPL-Caltech/University of Arizona]
Dunes, image 2 http://www.nasa.gov/sites/default/fil... [credit: NASA/JPL-Caltech/Univ. of Arizona]
Serpent Dust Devil http://www.nasa.gov/mission_pages/MRO... [credit: NASA/JPL-Caltech/Univ. of Arizona]
Tattooed Mars http://www.nasa.gov/multimedia/imageg... [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_o... [credit: NASA/JPL-Caltech/University of Arizona]
Phobos https://en.wikipedia.org/wiki/Moons_o... [credit: NASA/JPL-Caltech/University of Arizona]
Mars' Moon Phobos Eclipses the Sun, as Seen by Curiosity    • Mars' Moon Phobos Eclipses the Sun, a...   [credit: NASA Jet Propulsion Laboratory]
Material Excavated by a Fresh Impact and Identified as Water Ice http://www.jpl.nasa.gov/spaceimages/d... [credit: NASA/JPL-Caltech/University of Arizona]
Crater walls http://www.nasa.gov/externalflash/mgs... [credit: NASA/JPL/Malin Space Science Systems]
Sedimentary deposit http://mars.nasa.gov/msl/images/mars-... [credit: NASA/JPL-Caltech/MSSS]
Curiosity rover http://photojournal.jpl.nasa.gov/jpeg... [credit: NASA/JPL-Caltech/MSSS]
Astronaut on Mars http://www.nasa.gov/images/content/11... [credit: NASA]
Skylight http://static.uahirise.org/images/201... [credit: NASA/JPL-Caltech/Univ. of Arizona]
Life on mars http://www.nasa.gov/images/content/10... [credit: NASA/Pat Rawlings, SAIC]