GW170817 is the name given to a gravitational wave signal seen by the LIGO and Virgo detectors on 17 August 2017. Lasting for about 100 seconds, the signal was produced by the merger of t...

Cambridge, MA - Astronomers have made the first definitive detection of a radioactive molecule in interstellar space: a form, or isotopologue of aluminum monofluoride (26AlF). A team l...

Astronomers in the past decade have detected thousands of galaxies dating from epochs only a few billion years after the big bang. Many of them, discovered in deep optical and near-infrar...

Cambridge, MA - In the blink of an eye, a massive star more than 2 billion light-years away lost a million-year-long fight against gravity and collapsed, triggering a supernova and for...

Scientists, including Scott Wolk from the Harvard-Smithsonian Center for Astrophysics, may have witnessed the destruction of a young planet or planets for the first time using data from N...

Disc galaxies like our own Milky Way, characterized by a flattened disc of stars and gas (often with a central bulge of material as well) have a wide range of masses, spatial extents, and...

The path of light from a star as it passes by a massive body, like an exoplanet, will be bent and an observer looking towards the star will see its image distorted. Like an object seen t...

Cambridge, MA - The VERITAS array has confirmed the detection of gamma rays from the vicinity of a supermassive black hole. While these detections are relatively common for VERITAS, t...

Galaxy-galaxy interactions have long been known to influence galaxy evolution. They are commonplace events, and a large majority of galaxies show signs of interactions, including tidal t...

On this Independence Day a century and a half ago, Henrietta Swan Leavitt was born. While working at Harvard College Observatory in Cambridge, Mass. – now part of the Harvard-Smithsonian ...