General Teaching Aids

  • Orrery 
  • Earth beach ball
  • Balls on rods to show eclipse
  • Zodiac signs
  • Celestial sphere

Expanding Universe

  • Meteorological balloon with array of spots

Inverse Square Law

  • Large and small pyramid model 


  • Various light sources and holographic diffraction gratings for individual viewing
  • Holographic diffraction grating for TV camera

Black Hole Membrane Table

  • Black fabric stretched over circular wood frame and drawn from the centre into a small exit channel; marbles or coins may be rolled around it
Scale of the Earth-Moon System
  • Representative spheres and measuring tape
Mass of the Sun
  • Bag of beans


  • The Pira resource directory for astronomy

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