Smithsonian Astrophysical Observatory
http://www.cfa.harvard.edu/sao/ popularA research institute of the Smithsonian Institution headquartered in Cambridge, MA, where it is joined with the Harvard College Observatory (HCO) to form the Harvard-Smithsonian Center for Astrophysics (CfA).
Submitted in section: Astrophysics: Smithsonian Astrophysical Observatory