Black Hole

In galactic centers, black holes can be brought to each others’ proximity by dynamic processes, resulting in mergers. It is also possible that black holes formed in previous mergers encounter new black holes, resulting in so-called hierarchical mergers. Until now, such events have only been hinted. Now, scientists at the…

Black holes aren't what they eat. Einstein's general relativity predicts that no matter what a black hole consumes, its external properties depend only on its mass, rotation and electric charge. All other details about its diet disappear. Astrophysicists whimsically call this the no-hair conjecture. (Black holes, they say, "have no…

The competition will become clearly one-sided as the black hole of value that is bitcoin absorbs everything around it. Bitcoin was never going to be a store of value… until it was. It was never going to become a reserve currency, right up until the point when major businesses and…

Space 26 July 2021 By Leah Crane Black holes can accelerate stars to near the speed of light Vladimir Arndt / Alamy Stars that collide after being sped up by orbiting close to supermassive black holes may be so bright they rival the most powerful supernovae, some of the brightest…

Two instances of black hole-neutron star collision events have been detected using the Advanced LIGO and Virgo gravitational wave detectors, details of which have been published today in Astrophysical Journal Letters. Previous gravitational wave detections have spotted black holes colliding, and neutron stars merging, this is the first time that…

Centaurus A is the nearest radio galaxy that lies about 12 million light-years away in the southern constellation of Centaurus (The Centaur). There lies a black hole at the center of the galaxy with a mass of 55 million suns. In 2019, EHT released the first picture of the black…

Astronomers from the Event Horizon Telescope (EHT) Collaboration have imaged a jet in the heart of the nearby radio galaxy Centaurus A and identified the location of the galaxy’s central supermassive black hole with respect to its resolved jet core. Distance scales uncovered in the Centaurus A jet from the…

Several years of observations and theoretical modeling have helped astrophysicists better understand how gas collapses to form new stars in galaxies. But, not all galaxies are actively star-forming. Such galaxies have an abundant population of “quiescent” objects, including stars, at significantly lower rates. What stops star formation in galaxies? For…

Home News Could we ever solve the black hole information paradox? (Image credit: NASA) Are black holes as simple as they appear, or is there more to their story?  Theories that attempt to resolve the so-called black hole information paradox predict that black holes are much more complicated than general…

There is a black hole at the center of every galaxy that is millions to billions of times more massive than the Sun. The mass of the black hole is generally relative to the mass of the galaxy’s central region in the nearby universe. Isn’t it strange? The reason is…