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Handout
Other

Killer Asteroid Project: Asteroids and Comets

For Students 9th - 10th
Explains the differences between asteroids and comets. Presents a chart showing a size comparison between some known asteroids and comets.
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Unit Plan
National Earth Science Teachers Association

Windows to the Universe: Comets

For Students 9th - 10th
This site takes readers on a comet adventure. Learn everything you ever wanted to know about comets--including how and where they come from, specific comets throughout history and different comet exploration missions. Interactives are...