This is a classic exercise for visualizing just how BIG our Solar System really is. Both the relative size and spacing of the planets are demonstrated in this outdoor exercise, using a model to represent the size of the Earth.
Guy Ottewell has kindly given permission for this electronic presentation of The Thousand-Yard Model; his exercise is presented in its original form, indexed with a few anchors to help you find you way around the large file.
Build a Solar System Model | Exploratorium
Solar System Scale Model
The Solar System to Scale
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