Introduction to the Solar System: Crash Course Astronomy #9

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In today’s Crash Course Astronomy, Phil takes a look at the explosive history of our cosmic backyard. We explore how we went from a giant ball of gas to the system of planets and other celestial objects we have today.

This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse

Makeup of a Solar System 2:38
From Gas to a Disc 5:36
Planet Formation Depends on Distance to Sun 7:14
Motion of a System 8:21

PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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PHOTO/VIDEO CREDITS
Sun: http://www.nasa.gov/sites/default/files/706436main_20121114-304-193blend_m6-orig_full.jpg [credit: NASA/ESA]
Jupiter: http://www.jpl.nasa.gov/images/hubble/20140515/jupiter20140515-full.jpg [credit: NASA/ESA]
Geocentric celestial spheres; Peter Apian’s Cosmographia (Antwerp, 1539): http://en.wikipedia.org/wiki/Celestial_spheres#mediaviewer/File:Ptolemaicsystem-small.png
Ganymede: http://en.wikipedia.org/wiki/File:Noaa_ganymede.jpg
Mercury: http://messenger.jhuapl.edu/gallery/sciencePhotos/pics/CW0131775256F_web.png [credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington]
Understanding Solar System Dynamics: Orbits and Kepler’s Laws (2008): https://archive.org/details/OrbitsAndKeplersLaws
Mercury: http://apod.nasa.gov/apod/ap080116.html
Venus: http://www.msss.com/all_projects/magellan.php
Earth: http://earthobservatory.nasa.gov/IOTD/view.php?id=36019
Mars: http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-mars.html
Jupiter: http://www.nasa.gov/mission_pages/cassini/multimedia/pia04866.html
Saturn: http://www.slate.com/content/dam/slate/blogs/bad_astronomy/2014/06/Ten%20Years%20at%20Saturn/cassini_ugarkovic_saturn.jpg.CROP.original-original.jpg [credit: Photo by NASA/JPL/Space Science Institute/Gordan Ugarkovic]
Uranus: http://hubblesite.org/newscenter/archive/releases/1998/35/image/a/
Neptune: http://www.slate.com/blogs/bad_astronomy/2014/05/15/neptune_voyager_images_updated_for_portrait_of_the_eighth_planet.html
http://www.nasa.gov/sites/default/files/hs-2014-29-a-large_web.jpg [credit: JHUAPL/SwRI/Dan Durda]
Bennu’s Journey: http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=20220&button=recent
http://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=11541
Artist’s impression of a protoplanetary disk: http://en.wikipedia.org/wiki/Protoplanetary_disk#mediaviewer/File:Artist%E2%80%99s_Impression_of_a_Baby_Star_Still_Surrounded_by_a_Protoplanetary_Disc.jpg
Rocky Ring of Debris Around Vega: http://www.nasa.gov/mission_pages/spitzer/multimedia/pia16610.html [image credit: NASA/JPL-Caltech]
Proplyds in the Orion Nebula: http://www.esa.int/Our_Activities/Space_Science/Born_in_beauty_proplyds_in_the_Orion_Nebula

Comments

Aaron Rohrke says:

That's an awesome shirt. Only an astronomer, who has an abundance of confidence, can pull that off.

Disti Thapa Magar says:

yeah we are made of star stuffs

Sumitra Mozumder says:

sir, i am a class 9 student and i have a interest in astronomy. Ur way of teaching is best. thank u

Lachlan says:

A planet is on an object in space that orbits the sun (not another planet) and has a clear orbit

Endric_Gaming says:

Erm… How are you sure that the solar system formed from a disc? There is no proof…

Chris Halim says:

Thank you so much Sir!

KnightCraft 130 says:

WE'RE THE EXCEPTION

Ch3mson says:

ITS UR-ANUS NOT URINUS!!! GET YERR THINGS RIGHT!!!

Master F says:

Good I love it

João Felipe says:

That moment sun in my language is named "Sol".
I'm actually happy!

음경 says:

How to easily define a planet:

1. Any object that orbits around an object of solar mass(es)
2. Needs to be extremely round, with imperfections not readily visible
3. Cannot be orbiting any other body other than a object of solar mass(es)
4. Must clear it's orbital space of any debris

Mar Garet says:

the astronaut in 3:09 looks dr. micelle thaller

Bob McCoy says:

Heyyy, where's that other dude… >:(

Paula Torres Cuarental says:

Viva La Pluto, you astronomer fuckers…forever the ninth planet ¬¬

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