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Got Calcium?

Lithograph with Classroom Activity

Litho Front: X-ray Image of Exploded Star Where do the elements around us come from? Many are produced in stars, and liberated when these stars explode. This lithograph features a beautiful image of the remains of an exploded star, taken by NASA's new Chandra X-ray Telescope. The back explains stars' roles as "mighty chemical factories," and contains a classroom activity.
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Answers for 2008 version of "In the Classroom" Activity

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