The planet - um, dwarf planet - is represented by a half-inch wooden ball that is a part of the Maine Solar System Model created by a geology professor at the University of Maine-Presque Isle and lots of volunteers.
The scale model - one mile equals 93 million miles, the distance from the Earth to the sun - took four years to complete and begins with a wooden representation of the sun on the Presque Isle campus.
The display is spread out over 40 miles along Route 1 where passing travelers can gawk at each planet and test their memories of grade school science.
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