The theory of how black holes grow
New model aims to predict accretion or merger.
Astrophysicists in the US have developed a theoretical model for black holes to predict if growth by gas accretion or...
15 platters that matter
Rare images of planet-forming discs.
Astronomers have captured 15 new images of the inner rims of planet-forming discs hundreds of light-years away that s...
Do hungry galaxies eat their neighbours?
Modelling suggests that’s how big ones get bigger.
Exactly how massive galaxies attain their size is poorly understood, not least because it happens over billions of ye...
Star dance around a black hole
ESO telescope, and a lot of hard work, prove Einstein right.
After nearly three decades of work, scientists have revealed that a star orbiting the supermassive black hole at the ...
Thar she blows – up in space
Most energetic outflow from a distant quasar detected.
Astronomers say they have detected the most energetic wind ever measured from any quasar. It is travelling at nea...
A close look at a black hole’s jet
Data from the Event Horizon Telescope keeps on giving.
Creating the first direct image of a black hole is a hard act to follow, but it seems there are more goodies to be ha...
Another twist in the dark matter story
Electromagnetic signals don’t deliver the evidence.
US researchers say we can rule out dark matter being responsible for mysterious electromagnetic signals previously ob...
Quasar tsunamis rip through space
The phenomenon carries more energy than a gamma-ray burst.
This artist's concept of a distant galaxy with an active quasar at its centre shows the large amount of energy genera...
Slime mould sheds light on cosmic web
Algorithmic simulations use it to map binding dark matter.
Researchers have been creative in trying to trace the elusive cosmic web, the large-scale backbone of the cosmos. ...
How quickly is the Universe expanding?
It’s a question that’s causing a crisis in astrophysics.
The following is an excerpt from the article “Hubble trouble, boils and bubbles which is available in the Summer 2019...
Catching frame dragging in action
20-year study verifies Einstein’s prediction of general relativity.
Scientists studying tiny changes in a pulsar’s signal have proven that massive rotating objects drag surrounding spac...
Connecting dots in the sky
Scientists match up maps of matter and light.
Astrophysicists say they are a step closer to understanding the origin of a faint glow of gamma rays covering the nig...