Astronomers have witnessed something incredible: a supermassive black hole that was dormant for decades suddenly waking up ...

"When we first saw Ansky light up in optical images, we triggered follow-up observations using NASA's Swift X-ray space telescope, and we checked archived data from the eROSITA X-ray telescope, but at ...

We don’t yet understand what causes them. Studying Ansky will help us to better understand black holes and how they evolve.” “XMM-Newton played a pivotal role in our study.

More information: Discovery of extreme Quasi-Periodic Eruptions in a newly accreting massive black hole, Nature Astronomy (2025). DOI: 10.1038/s41550-025-02523-9 Journal information: Nature Astronomy ...

This is what is called a stellar mass black hole. But in the past two decades, new types of black holes have been seen and astronomers are beginning to understand how they form.

But even this monstrous black hole can't stomach so much matter, leading to some serious indigestion in the form of outflows travelling at around 0.27 times the speed of light.

But it turns out that this black hole only accelerated about half the stars. The other half got sped up in the Large Magellanic Cloud, a dwarf galaxy that is the closest galaxy to our own.

More A new kind of black hole and a newly proven theory The original understanding of how black holes formed was that when a sufficiently large sun (about 10 times or more massive than our sun ...

"Black holes are still, at their core, a mystery. We know that they are big dense objects and that they attract other things to them through gravity, but we haven't gotten close to a black hole." ...

This "black hole information paradox" has bedeviled researchers for decades, and they have developed numerous potential solutions. One is known as nonviolent nonlocality.

PARIS, France — A massive black hole at the heart of a galaxy in the Virgo constellation is waking up, shooting out intense X-ray flares at regular intervals that have puzzled scientists, a ...