A story of light and darkness
There’s a problem with dark matter, and two possible solutions: bright, luminous supernovae, or dark matter itself.
Self-Interacting Dark Matter: A Better Destroyer of Galaxies
When galaxies fall into galaxy clusters, the consequences can be quite epic. But are they more epic with Self-Interacting Dark Matter? Today’s paper suggests the answer is yes. Bite also available in Dutch / Deze Bite is ook beschikbaar in het Nederlands!
Red, dead (and flat?) galaxies in distant clusters
Most galaxies are either star-forming disks, or red, dead spheroids. But, have galaxy clusters now shown that this divide isn’t quite so clear?
Colossal strands of galaxies are spinning through the Universe
Cosmic filaments are some of the biggest structures in the Universe. Now, we’ve learned that they’re spinning around in space.
Hunting for stellar splashback: defining the size of a galaxy cluster
How big is a galaxy cluster? Today’s authors use the remnants of destroyed galaxies to define the edge of galaxy clusters.
Jellyfish Galaxies Swimming Through Clusters
How can a cluster turn an ordinary galaxy into this mysterious creature?