Observing groups of galaxies collide in X-rays has revealed more about the drastic cosmic occasion
Hubble looks at the universe’s earliest galaxies
The first set of observations for the BUFFALO survey began with the galaxy cluster Abell 370
What’s at the centre of a galaxy cluster?
Gemma Lavender gets to the bottom of this question for us
Hubble spots the farthest star ever seen
This massive blue star existed just 4.4 billion years after the Big Bang
“Ultramassive” black holes are eating their host galaxies
A team of international astronomers has found a selection of black holes, even larger than supermassive black holes, up to 3.5 billion light years away
‘Wobbling’ galaxies upset our understanding of dark matter
This unusual phenomenon within galaxy clusters may indicate to a new physics at work
Astronomers suspect dark matter is fuzzy
The study, which involves 13 galaxy clusters, explores the possibility that mysterious substance may be more ‘fuzzy’ than ‘cold’
Supermassive black hole found in unlikely place
A near-record-breaking supermassive black hole, weighing 17 billion suns, has been uncovered in a sparsely populated area of the universe