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    Astronomical Society of the Pacific
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    This simple and engaging astronomy activity explains nuclear fusion and how radiation is generated by stars, using marshmallows as a model. Learners will explore what cosmic radiation is and where...

    $1 - $5 per group Ages 8 - adult 5 to 10 minutes
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    The Exploratorium
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    In this activity, learners make a black box device that serves as an excellent analogy to Rutherford's famous experiment in which he deduced the existence of the atomic nucleus. Learners roll...

    $1 - $5 per group Ages 14 - 18 30 to 45 minutes