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Discover the “cosmic coincidence” that makes solar eclipses possible!
Create a scale model of the earth-moon system using different-sized spheres.
Make a scale model of a total solar eclipse!
Measure the height of an object indirectly using your hand and a ratio.
Find the height of a tree, paper rocket or North Star.
So close, yet so far away.
Use your thumb to eclipse your friend!
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Attribution: Exploratorium Teacher Institute
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