Planets

toc

Introduction:
Planets are a source of fascination, and millions of people were very upset over Pluto's "demotion". What is a planet? Should we count Pluto or not? This lesson will explore what planets all have in common, and what else is out there!

Activity:

 * media type="custom" key="5578827"
 * Click here to make your own copy!

Conclusion:
media type="custom" key="5581625"

Enrichment:
media type="custom" key="5579277"

media type="file" key="ssc2004-05v1_qt6.mov" width="300" height="300"