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In this online activity, learners build their own system of heavenly bodies and watch the gravitational ballet.

free Ages 11 - adult 10 to 30 minutes
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In this math-based activity, learners model the intensity of light at various distances from a light source, and understand how astronomers measure the amount of sunlight that hits our planet and othe

$1 - $5 per group Ages 11 - adult 45 to 60 minutes
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In this activity, learners model ancient lunar impacts using water balloons.

Over $20 per group Ages 8 - 14 10 to 30 minutes