PURPOSE: To illustrate our galaxy.
DESCRIPTION: This is a model of our galaxy, the size of the milky way shrunk to about 50cm diameter, a ratio of 1:2x10+21!! See table of interesting sizes in the Demonstration Reference File, a copy of which is available with the demonstration.
The red marble locates the approximate position of the solar system.
SUGGESTIONS: FRAGILE! Be careful.
REFERENCES: (PIRA unknown.) Constructed by Jack Horne of the Physics Lecture-Demonstration Facility. See Demonstration Reference File.
EQUIPMENT: Galaxy model on pedestal (stored on top of cabinet in Room 0402).
SETUP TIME: None.
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