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Pocono Mountain Observatory

The Pocono Mountain Observatory is a privately owned facility             
           located in the heart of the Pocono Mountains PA.

William Lassell discovers Ariel & Umbriel, moons of Uranus, 1851.

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Tuesday October 24, 2017 All Day
Annually on October 24

William Lassell discovers Ariel & Umbriel, moons of Uranus, 1851.

http://en.wikipedia.org/wiki/William_Lassell