Small objects in the solar system, including both comets and asteroids, have a wide range of dynamical parameters and physical properties. Comets, for example, originate in the outer reac...

The sparsely distributed hot gas found today between galaxies, the intergalactic medium (IGM), is ionized. The early universe started off hot, but then it rapidly expanded and cooled allo...

Harvard Astronomy department chair Abraham Loeb has been nominated to the President's Council of Advisors on Science and Technology (PCAST). The council advises the president of the Unite...

Most galaxies are thought to host at its nucleus a supermassive black hole (SMBH), an object with a mass exceeding a million solar-masses. Our Milky Way, for example, has a four million s...

Cambridge, MA - Scientists at the Center for Astrophysics | Harvard & Smithsonian today announced the discovery and study of the brightest, most energetic, and likely most massive su...

Technological advances in recent years have increased the sensitivity of radio interferometers like the Karl G. Jansky Very Large Array (VLA) to the radio emission from astronomical sourc...

People searching for productive ways to contribute to historical research or to science curriculum development while sheltering in place have a new hero. The Wolbach Library at the Center...

Cambridge, MA - An international collaboration of scientists—with key contributions from the Center for Astrophysics | Harvard & Smithsonian—today announced the first measurement of ...

Cambridge, MA - Scientists at the Center for Astrophysics | Harvard & Smithsonian (CfA), in concert with the Event Horizon Telescope (EHT) Collaboration, have discovered something lu...

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-s...