Galaxies fling out matter much more violently than we thought

 

Black holes are extremely powerful matter distributors. Image courtesy of NASA Image Collection/Alamy

Joel Kontinen

From where does dark matter come? Even the ordinary cosmic matter is a mystery for some cosmologists. Now they have a solution, black holes.

Unexpectedly violent black holes may have caused the mystery of the missing cosmic matter.

Most of the universe is filled with mysterious dark matter, but even ordinary matter has stumped cosmologists. Some of this normal matter – made up of particles called baryons – seemed to have been missing for a long time. Researchers recently worked out where it was hiding, and now Boryana Hadzhiyska at the University of California, Berkeley and her colleagues have learned how black holes may have shaped its distribution and kept it hidden.

 Source:

Karmela Padavic-Callaghan 2025 Galaxies fling out matter much more violently than we thought | New Scientist 6 October