Rotation Speed (Aviation Blog)

rotation speed

Flying planes, launching rockets, buying tech and driving a Leaf

Mechanical Planetary Models

These are not kits you can build! Here are pictures of some of the most beautiful mechanisms ever produced. A gallery of old and new mechanical movements of planets and their moons, the entire solar system and tides and eclipses. Orreries, Planetaria and Telluria, respectively. I wish I could say I knew those words before I saw this, but alas I did not.

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