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Dunking the Planets
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In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.
Aerogel-lo
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This demonstration (on pages 9-11) uses gelatin and lead pellets to model how aerogel, a technology used by NASA spacecrafts, is used to capture comet particles.
Cooling Off
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In this activity, learners are introduced to challenges of maintaining temperatures while living in space.