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Globe at Night
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.
The Thousand-Yard Model
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This is a classic exercise for visualizing the scale of the Solar System.
Space Jell-O
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Albert Einstein proved that space bends around anything that has mass. This activity uses Jell-O's ability to bend around objects as a model for space bending around planets and stars.