Sagittarius A* Shows Signs of Increased X-Ray Activity
The Milky Way’s supermassive black hole has revealed some unusual activity, showing an increase in X-ray flares that coincided with the close passage of the…
The Milky Way’s supermassive black hole has revealed some unusual activity, showing an increase in X-ray flares that coincided with the close passage of the…
Astronomers believe that radio waves coming from supersonic stars will help them find stars that no one has seen before. The center of our Milky…
In a newly published study, astronomers reveal evidence for a new intermediate-mass black hole about 5,000 times the mass of the sun. Nearly all black…
Using ultraviolet data from GALEX and the Hubble Space Telescope, astronomers reveal new details about merging black holes. Entangled by gravity and destined to merge,…
New research form the Harvard-Smithsonian Center for Astrophysics shows that shocks in a distant gamma-ray burst originated in a supernova. Gamma-ray bursts (GRBs)–flashes of high-energy…
Using NASA’s Hubble Space Telescope, a team of astronomers discovered that Markarian 231 is powered by two central black holes furiously whirling about each other….
Using the XMM-Newton X-ray Satellite, astronomers from the Max Planck Institute observe the events around the black hole at the center of the Milky Way….
A new analysis of 13 supernovae is helping to reveal how some young stars exploded sooner than expected, hurling them to a lonely place far…
Using NASA’s Chandra X-ray Observatory and the 6.5-meter Clay Telescope, a team of astronomers has identified the smallest supermassive black hole ever detected in the…
Using the Hubble Space Telescope, astronomers have uncovered a unique process for how the universe’s largest elliptical galaxies continue making stars long after their peak…
NASA’s Fermi Gamma-ray Space Telescope and other satellites have recorded a record flare from a black hole at the center of the distant galaxy 3C…
A team of scientists has discovered a black hole in the early universe that grew much faster than its host galaxy, resulting in a gigantic…
Since June 15, astronomers have been monitoring the ongoing light show detected by NASA’s Swift satellite. This new outburst is from V404 Cygni, a binary…
Using NuSTAR, astronomers clearly identified five supermassive black holes that were previously elusive because of their surrounding cocoons of material. Some of the “biggest and…
Astronomers used the magnifying effect of the stars to ‘zoom in’ on galaxy PKS 1830-211, revealing very small structures in the distant galaxy. The Integral,…
Astronomers around the world are watching the onset of a rare X-ray outburst from a stellar-mass black hole in the binary system V404 Cygni. On…
Using the Hubble Space Telescope, astronomers uncover the mysterious early formative years of quasars and unveil chaotic collisions of galaxies that fuel quasars by feeding…
NASA’s Chandra X-ray Observatory reveals that a supermassive black hole at the center of a group of galaxies has erupted multiple times over a period…