Demonstrates: The expansion of a one-dimensional universe.

Description: Seven Styrofoam "planets" are attached to rubber tubing that can be stretched out.

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.

Demonstrates: Shows how space is warped by gravity.

Description: A rubber sheet is warped when a metal ball is placed on it.