Cambridge, MA — NASA's Hubble Space Telescope has measured the size of the nearest Earth-sized exoplanet that passes across the face of a neighboring star. This alignment, called a transi...

Cambridge, MA -- In 2019, the EHT released its first image of a ring of hot plasma close to the event horizon of M87*. In 2021, EHT produced new images in polarized light, giving the firs...

Cambridge, MA -- Astronomers have discovered the most distant black hole yet seen in X-rays, using NASA telescopes. The black hole is at an early stage of growth that had never been witne...

Cambridge, MA -- NASA has selected a new heliophysics mission focused on investigating the Sun's middle corona — an enigmatic region of the Sun's atmosphere driving solar activity — for a...

Cambridge, Mass. — A newly discovered nearby supernova whose star ejected up to a full solar mass of material in the year prior to its explosion is challenging the standard theory of stel...

This news feature was adapted from a release by the GMTO Collaboration, posted here.

Michael Johnson, a Smithsonian Astrophysical Observatory astrophysicist at the Center for Astrophysics | Harvard & Smithsonian (CfA), has been awarded the 2024 New Horizons in Physics...

The Smithsonian Astrophysical Observatory, part of the Center for Astrophysics | Harvard & Smithsonian (CfA), has selected a contractor to design, develop and build antennas for the N...

Cambridge, Mass. – An extreme star system is giving new meaning to the phrase "surf's up." The star system intrigued researchers because it is the most dramatic "heartbeat star" on recor...

Cambridge, MA -- On July 1, 1973, the Harvard College Observatory and Smithsonian Astrophysical Observatory signed an agreement to become the Center for Astrophysics | Harvard & Smith...