This planetarium gets planet positions from NASA daily at midnight and aligns them without complex gears. A motor rotates Mercury, triggering a chain reaction among the other planets. This slow process is shown as a 30x timelapse in the video, taking 1.5 hours in real-time. The Sun houses the motor and other components, and the planetarium's diameter is 2.1 meters. There are also extra gears for the Moon's rotation.
You can make your own mini planet spinner at www.instructab...
Some people might think this is an orrery, but I don't think it is. All orreries show the relative speed of motion of the planets. Rarely it shows the correct orientation matching the current date. This planet spinner, as I call it, makes a strange back and forward motion to spin the planets and the moon in the correct orientation, and it does so once every night.
music: "exit the Premises" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
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15 окт 2024