The CfA is a collaboration of Harvard College Observatory (HCO) and Smithsonian Astrophysical Observatory (SAO) and home to Harvard's Department of Astronomy.

News Releases

September 10, 2014

Dr. Philip M. Sadler of the Harvard-Smithsonian Center for Astrophysics (CfA) has been awarded the 2014 Technology and Innovation Award from the International Planetarium Society.

September 4, 2014

Before iPhones and laptops there were human computers, some of whom worked at the Harvard College Observatory. Women like Henrietta Swan Leavitt, Williamina Fleming, and Annie Jump Cannon made some of the most important discoveries in astronomy in the early 20th century.

Latest Science Update

September 19, 2014

The Pleiades star cluster, a brilliant collection of several hundred stars visible in the winter sky near the constellation of Orion, has been admired by people for thousands of years; it is cited in the Bible and the works of Greek authors.

SI Specific Information

SI-specific information regarding the government shutdown may be found at SAO staff are encouraged to review the website for updated information