A gravastar (gravitational vacuum star) is a hypothetical cosmic object proposed as an alternative to a black hole.
Astronomers have discovered the earliest known flickering quasar, whose light has traveled more than 13 billion years to reach us.
A new research estimates that of order tens of millions of planetary mass objects can form in outer regions of AGN accretion disks - active supermassive black holes.
The Universe’s biggest black holes may not be born giants after all. Scientists analyzing gravitational-wave signals from dozens of black hole collisions found evidence that the heaviest black holes are likely “cosmic recyclers” .
US astrophysicists have caught sight of a potential primordial black hole using the Laser Interferometer Gravitational-Wave Observatory (LIGO).
A new study suggests a solution to the Little Red Dots mystery. Scientists think young supermassive black holes may go through a “cocoon phase,” where they grow surrounded by high-density gas they feed on.
astronomers identified the clearest observational record yet of a massive star fading and vanishing into a black hole — an event once theorized but rarely seen.
A nearby active galaxy called VV 340a offers a dramatic look at how a supermassive black hole can reshape its entire host.
An international team of astronomers claim to have made a baffling discovery with the help of NASA’s James Webb Space Telescope: the first runaway supermassive black hole that’s rocketing away from its home at a staggering speed.
Astronomers from the University of Hawaiʻi Institute for Astronomy (IfA) have uncovered the turbulent past of a distant red giant by listening to its celestial "song."
Early superdense star clusters may have planted seeds for monster black holes.
The black hole was bigger than expected, and while the answer was hiding in plain sight, it still rewrites what we thought was possible.
Gravitational waves from the birth of two newborn black holes caught the attention of scientists last year. Scientists have discovered something spectacular about the birth of one of the black holes.
If a new proposal by MIT physicists bears out, the recent detection of a record-setting neutrino could be the first evidence of elusive Hawking radiation.
The researchers suggest that LIGO and Virgo picked up the signals of a black hole collision in a different universe than ours.
