Harvard University astronomers and Smithsonian Institution astronomers explore the cosmos together. The combination of the Harvard College Observatory (HCO) and the Smithsonian Astrophysical Observatory (SAO) is known as the Center for Astrophysics | Harvard & Smithsonian (CfA).

News Releases

December 7, 2018

The Tropospheric Emissions: Monitoring of Pollution (TEMPO) instrument, an Earth science space instrument that will measure air pollution over North America, has successfully completed development by Ball Aerospace and Technologies Corp. in Boulder, Colorado and has been formally accepted by NASA.

November 13, 2018

A new discovery reported in the Astrophysical Journal Letters might lay claim to title of the most unusual extreme class of astronomical object: very high energy (VHE) gamma-ray emitting, neutron star-massive star binary pairs.

Latest Science Update

December 7, 2018

3C196.1 is a massive elliptical galaxy, the brightest member of a cluster of galaxies about three billion light-years away that is notable for its strong X-ray and radio emission. The radiation is a characteristic signature of accretion processes around a supermassive black hole at the galaxy's nucleus.

SI Specific Information

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