SpaceWatchtower
Sunday, November 27, 2016
155th Anniversary of Allegheny Observatory: The Very 1st Director
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Monument commemorating the very first Allegheny Observatory Director, Dr. Philotus Dean, on Pittsburgh's North Side not far from Allegh...
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Saturday, November 19, 2016
75th Anniversary: America's 6th Public Observatory
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Pictured is the 10-inch Siderostat-Type Refractor Telescope (Property of the City of Pittsburgh) in operation at Pittsburgh's origina...
7 comments:
Sunday, November 13, 2016
Historic 'Super-Moon' Sun. & Mon.; Accurate Earth--Moon Distances by Laser
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The Apache Point Observatory Lunar Laser-Ranging Operation (APOLLO) in New Mexico shoots a laser at the Moon. The laser pulse is reflecte...
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