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My Solar System
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In this online activity, learners build their own system of heavenly bodies and watch the gravitational ballet.
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Weight in Space
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In this activity, learners are challenged to calculate their own weight on various planets using a scale and calculator. Older learners may be challenged to do so without using calculators.
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Black Holes: No Escape
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This fun and simple hands-on astronomy activity lets learners experiment with marbles and weights to discover some basics about gravity and black holes.
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The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.