Description: [caption id="" align="aligncenter" width="424" caption="U.S. National Museum, May 3, 1917, seen from the National Mall, by Unknown photographer, Photographic print, Smithsonian Institution Archives, Record Unit 45, Box 79, Folder: 10, Neg. SIA2009-2203."][/caption] As part of my work as the historian for the history of the Smithsonian, I’ve been working for the past year on
Description: Established in 1890, the Smithsonian Astrophysical Observatory was one of the earliest observatories to practice the "new astronomy," or astrophysics. Originally located behind the Smithsonian Institution Building, the Castle, in 1955, the Observatory moved to Cambridge, Massachusetts. Today, the Harvard-Smithsonian Center for Astrophysics has observing stations in Arizona,