Description: A daily photo highlight from Smithsonian collections. [caption id="" align="aligncenter" width="412" caption="Volunteer satellite trackers in Pretoria, South Africa, for Smithsonian Astrophysical Observatory's Moonwatch Network, one of more than 100 teams worldwide, 1965, by Unknown photographer, Photographic print, Smithsonian Institution Archives, Record Unit 371 Box 4
Description: [caption id="" align="aligncenter" width="430" caption="The Division of Radiation and Organisms Laboratory, located in the basement of the Smithsonian Institution Building, a division of the Smithsonian Astrophysical Observatory dedicated to studying the effects of solar radiation on organisms. Shown here is a vacuum type thermocouples of very high sensitivity, used in
Description: In honor of the 2016 Smithsonian Education Award recipient, Kimberly Arcand. Smithsonian Astrophysical Observatory visualization lead, Kimberly Arcand, makes astrophysics more accessible with coding programs for girls and boys using NASA data, and cutting-edge Chandra data visualization projects such as data-based 3D printed supernova remnants. #Groundbreaker
Description: [caption id="" align="aligncenter" width="421" caption="The Smithsonian Astrophysical Observatory (SAO) tested fabrics for the War Department during World War II at the Miami Solar Station, Miami, Florida, c. 1940-1945, by Unknown photographer, Photographic print, Smithsonian Institution Archives, Record Unit 7005, Box 187, Folder 5, Negative Number: 38154-A."][/caption]
Description: The Smithsonian Institution’s first building, the Castle, was designed by architect James Renwick. Until 1881, it housed all aspects of Smithsonian operations, including research, administration, lecture and exhibit halls, library, laboratories, collections storage, and living quarters for the Secretary. Today, the Castle houses administrative offices and the Smithsonian