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![]() | Document Date: 2013-09-27 04:38:37Open Document Share Result on FacebookCityStates Naval Observatory / Raleigh / Paris / /FacilityParis Observatory / Argelander's Durchmusterung W The Lick Observatory / Observatory of Meudon / Ladd Observatory / Lick Observatory / Catholic University of America / United States Naval Observatory / /HolidayAscension / /IndustryTermgas engine / electricity / square znA oí steel / /OrganizationNational Aeronautics and Space Administration / Catholic University of America / Washington / Astronomical Society of the Pacific / /PersonSaegmüller / Janssen / /Positionobserving chair / /ProvinceOrStateNorth Carolina / Washington / /PublishedMediumScientific American / /SocialTag |