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Introduction to the Solar System: Crash Course Astronomy #9

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:

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

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PHOTO/VIDEO CREDITS
Sun: [credit: NASA/ESA]
Jupiter: [credit: NASA/ESA]
Geocentric celestial spheres; Peter Apian’s Cosmographia (Antwerp, 1539):
Ganymede:
Mercury: [credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington]
Understanding Solar System Dynamics: Orbits and Kepler’s Laws (2008):
Mercury:
Venus:
Earth:
Mars:
Jupiter:
Saturn: [credit: Photo by NASA/JPL/Space Science Institute/Gordan Ugarkovic]
Uranus:
Neptune:
[credit: JHUAPL/SwRI/Dan Durda]
Bennu’s Journey:

Artist’s impression of a protoplanetary disk:
Rocky Ring of Debris Around Vega: [image credit: NASA/JPL-Caltech]
Proplyds in the Orion Nebula: