This model of the solar system is on the grounds of the château in Amboise and is known as Da Vinci's planetarium. I like models like this one but they don't really convey the enormous distances between the planets and the sun or their scale. I figured out that if they were to scale, an earth the size of a regular globe (around 12 inches or 30 cm in diameter) would be over 2.2 miles (3.5 KM) away from a sun that would be over 100 feet (30 meters) in diameter.
That's the problem with to scale! I do like it.
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