If you could hear the stuff that swirls around black holes, superdense white dwarfs and young stars, what would it sound like? Probably like the empty spaces on the radio dial, researchers say.
Simone Scaringi, a postdoctoral researcher at the Max Planck Institute in Germany, studies “accretion disks” around massive objects. An accretion disk is acollection of matter that gathers in a disc shape around a rotating object. Scaringi and his team looked at flickering in the light emissions of galactic nuclei, black holes, young stellar objects and white dwarfs, which are the collapsed remnants of massive stars. You can hear what accretion disks around black holes sound like here.
Continue reading Eavesdropping on Black Holes: Feasting Giants Sound Like Static
Since humans first looked up at the stars we have been amazed and inspired by the wonders of the night sky.
Unfortunately due to the overwhelming vastness of outer space, many astronomy newcomers quit in frustration before truly experiencing the cosmos. Continue reading Top five ways to get the most from the stars
Our brains struggle to comprehend how big the universe is because everything here on Earth, and even the Earth itself, is very small when compared to the immense scale of the universe.
So let’s think about it a different way, using something we see and interact with every day…light. Continue reading How big is the universe?
- ICRAR computer simulations consider dead galaxies
- Galaxies in cluster held together by dark matter
- Cluster ‘quenches’ galaxy of hydrogen gas
THE mysterious cosmic material dark matter has been credited with protecting dead galaxies in a cluster and preventing them from being ripped apart by the cluster’s enormous gravitational forces.
Continue reading Dead galaxies protected by dark matter