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Science. Astronomy.        
orrery Instruments.
 
OrreryAn Orrery is essentially a partial model of the solar system as seen from the "outside," with the Sun at the center, that accurately recreates the rotation of the planets around the Sun, along with, in many models, the rotation of the various planetary moons around their respective planets.
Hans LippersheyHans Lippershey probably did not invent the concept of a refracting telescope, but he did manage to create the first known example of such a device, in 1608.
Palomar Mountain ObservatoryPalomar Mountain Observatory is located about 40 miles northeast of San Diego. Completed in 1947, the observatory's main instrument is the 200-inch Hale Telescope, which is capable of photographing objects several billion light-years away.
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Astronomical Terrestrial Telescope
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