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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.

Mariner 2, first successful planetary flyby (Venus), 1962.

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Friday December 14, 2018 All Day
Annually on December 14

Mariner 2, first successful planetary flyby (Venus), 1962.

http://en.wikipedia.org/wiki/Mariner_2