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

April 3, 2020

Scientists at the Center for Astrophysics | Harvard & Smithsonian today announced the detection of J2322+0509, a detached binary white dwarf composed of two helium-core stars with a short orbital period. It is the first gravitational wave source of its kind ever detected.

March 18, 2020

The Tropospheric Emissions: Monitoring of Pollution (TEMPO) instrument, a NASA satellite instrument lead by Principal Investigator Kelly Chance from the Center for Astrophysics | Harvard & Smithsonian, will launch to orbit aboard a SpaceX Falcon 9 launch vehicle.

Latest Science Update

April 3, 2020

TRAPPIST-1 is a system of seven Earth-sized worlds orbiting an ultra-cool dwarf star about forty light-years away. The IRAC camera on Spitzer was used to help discover these seven Earth-sized planets orbiting the star, at least three of them lying in the star's habitable zone

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