If you’re on the road this summer – specifically, if you’re up in Aroostook County, in northern Maine – check out this immense scale model of the solar system. The model – with 1 mile equal to 1 AU – runs 40 miles along Route 1 between the University of Maine at Presque Isle and the end of I-95. I’m not saying go out of your way to check it out – but should you happen to be in the neighborhood…here’s Venus at the Budget Traveler Motor Inn.

At forty miles from the sun, Pluto is a one-inch ball at the Houlton Information Center.   This, more than any other model I’ve seen, really conveys how big space is — and how empty.

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