Lights-up-in-the-dark three-dimensional model of the local group.
What it shows:
Three dimensional model of the local group of galaxies, with a scale of 1mm = 1kpc.
How it works:
A large wooden base board forms an x-y plane from which the approximate relative positions of the local galaxies are measured. The galaxies are LEDs and (for the two biggest, the Milky Way and Andromeda) 6V bulbs, mounted atop 8mm diameter plastic tubing; the length of the tube gives a z-axis position of the galaxy. The wires from the LEDs and...
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