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8C 10.10 - One Dimensional Expanding Universe
Demonstrates: The expansion of a 1-D universe.
Description: Seven "planets" are attached to rubber tubing that can be stretched out.
8C 10.10a - Three Dimensional Expanding Universe
Demonstrates: 3 dimensional expansion from a central point
Description: Hoberman sphere expanding and contracting
8C 10.30 - Closed and Open Universe Models
Demonstrates: How a closed and an open Universe would look.
Description: A black ball and a green spool represent two theories of our Universe's shape.