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A_Lonely_Galactic_Island.jpg
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Portrait_of_Arthur_Stanley_Eddington_(1882-1944),_Astronomer.jpg
George_A._Van_Biesbroeck_(1880-1974).jpg
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Elizabeth_Roemer_(1929-_),_at_her_desk_at_the_U.S._Naval_Observatory,_Flagstaff_(Arizona)_Station,_c._1963.jpg
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Cecilia_Helena_Payne_Gaposchkin_(1900-1979).jpg
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Cecilia_Helena_Payne_Gaposchkin_(1900-1979).jpg
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(left_to_right):_Edward_Uhler_Condon_(1902-1974),_Brien_McMahon_(1903-1952),_Helen_Gahagan_Douglas_(1900-1980),_Harlow_Shapley_(1885-1972);_and_William_Hammatt_Davis_(1879-1964).jpg
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Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Inscription_inside_the_Niche_to_the_Left_of_a_Window_WDL3817.png
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Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Main_Facade_(Eastern)._Section_of_Inscriptions_on_the_Wall_of_the_Minaret_WDL3854.png
Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Main_Facade_(Eastern)._Door_Leading_to_the_Inner_Courtyard_WDL3855.png
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Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Main_Facade_(Eastern)._Inscription_on_the_Walls_of_the_Facade_WDL3861.png
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Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Inner_Courtyard_(Northern_Side)._Column_Base_at_the_Main_Portal_Niche_WDL3865.png
Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Inner_Courtyard_(Northern_Side)._Section_of_a_Column_(Pillar)_beside_the_Main_Niche_WDL3866.png
Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Inner_Courtyard_(Northern_Side)._Inscription_along_the_Right_Side_of_the_Main_Portal_Niche_WDL3867.png
Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._Detail_of_the_Smaller_Niches_Within_Them_WDL3869.png
Antiquities_of_Samarkand._Madrasah_of_Ulugh_Beg._View_of_a_One-Storied_Gallery_Surrounding_the_Interior_of_the_Courtyard_WDL3870.png
A_Modern_Depiction_of_the_World,_Done_by_Philippus_Eckebrecht,_Citizen_of_Nuremberg,_for_the_Sole_Reason_of_Bringing_the_Depiction_into_Line_with_the_Equator_According_to_the_Astronomical_Tabulae_WDL166.png
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NSF brings astronomy to the public as part of the Astronomy Festival on the Mall.jpg
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Jean-Marc_Nattier_-_Miniature_Portrait_of_César_François_Cassini_de_Thury_-_Walters_38101.jpg
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98"_Mirror.jpg
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Antiquities_of_Samarkand._Mausoleum_of_the_Emir_Timur_Kuragan_(Gur-Emir)._Section_of_Grave_Marker_WDL3714.png
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