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Discussion Guide
Look at the solar system in a fresh way as you examine Pluto's new place in it. Go behind the scenes to see how scientists explore outer space and why science is always changing.
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Grades 3-5 Lesson Plan
Create poster presentations on some of the smaller celestial bodies found in space: asteroids, meteoroids, and comets.
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Grades 6-8 Lesson Plan
Debate the value of using the powerful Hubble Space Telescope to discover more planet-like objects such as Pluto in outer space.
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Grades 9-12 Lesson Plan
Explore how best to devise a space program for NASA's exploration of Pluto.
View Lesson Plan
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Downsizing the Solar System
An image of the solar system, which scientists now say includes only eight true planets but also many other bodies orbiting the sun
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Pluto's New Personality
A puzzle within a puzzle that challenges students to identify words and phrases providing clues to Pluto's changed status
Puzzle PDF
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Is Pluto a Planet?
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| Subscribers to unitedstreaming can access the following video clips. |
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Pluto
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Uranus, Neptune, and Pluto
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In Search of Planet X: Lowell and Tombaugh
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