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This article describes the work being done by scientists to determine the origin of water found in Earth's oceans. A supplemental exploration of the Herschel Space Observatory is included. The article is targeted to children ages 10-12.

Audience: Informal education
Materials Cost: Free

This is an activity about comet composition. Learners will explore the physical characteristics of comets by reaching into a series of boxes and feeling the materials and structures within. They will describe what they observe and speculate on comet... (View More)

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