An image of Messier 101, the Pinwheel Galaxy, made with the Hubble Space Telescope. The bright blue clumps in the spiral arms are sites of recent star formation. Credit: NASA, ESA, K. Kuntz (JHU), F. Bresolin (University of Hawaii), J. Trauger (Jet Propulsion Lab), J. Mould (NOAO), Y.-H. Chu (University […]

An artist’s impression of two black holes about to collide and merge. Study offers evidence, based on gravitational waves, to show that the total area of a black hole’s event horizon can never decrease. There are certain rules that even the most extreme objects in the universe must obey. A […]

Scientists at University of Chicago and University of California, Riverside have put forward a surprising theory to explain mysterious, supermassive black holes that formed early in the universe; those black holes could have formed with the help of dark matter. Credit: ESA/ATG medialab Scientists offer new theory to explain the […]

An artistic image inspired by a black hole-neutron star merger event. Credit: Carl Knox, OzGrav/Swinburne Mix pair is “elusive missing piece of the family picture of compact object mergers.” A long time ago, in two galaxies about 900 million light-years away, two black holes each gobbled up their neutron star […]

ANIMATION UC Riverside-led study points to a seed black hole produced by a dark matter halo collapse. Supermassive black holes, or SMBHs, are black holes with masses that are several million to billion times the mass of our sun. The Milky Way hosts an SMBH with mass a few million […]

Artist’s impression of a galactic wind driven by a supermassive black hole located in the center of a galaxy. The intense energy emanating from the black hole creates a galaxy-scale flow of gas that blows away the interstellar matter that is the material for forming stars. Credit: ALMA (ESO/NAOJ/NRAO) Researchers […]

Supermassive black holes (SMBH) occupy the center of galaxies, with masses ranging from one million to 10 billion solar masses. Some SMBHs are in a bright phase called active galactic nuclei (AGN). AGNs will eventually burn out since there is a maximum mass limit for SMBHs; scientists have long since […]

This is an illustration of a distant galaxy with an active quasar at its center. Credit: NASA, ESA and J. Olmsted (STScI) Astrophysicists have developed a new method for finding changing-looking quasars – important but extremely rare objects in deep space. Astrophysicists from the University of Bath have developed a […]

A black hole (marked by the red x) at the center of galaxy MRC 0600-399 emits a jet of particles that bends into a “double-scythe” T-shape that follows the magnetic field lines at the galaxy subcluster’s boundary. Credit: Modified from Chibueze, Sakemi, Ohmura et al. (2021) Nature Fig. 1(b) Radio […]

Artist’s impression of binary black holes about to collide. Credit: Mark Myers, OzGrav-Swinburne University General relativity, Einstein’s theory of gravity, is best tested at its most extreme — close to the event horizon of a black hole. This regime is accessible through observations of shadows of supermassive black holes and gravitational waves — […]