A story of light and darkness
There’s a problem with dark matter, and two possible solutions: bright, luminous supernovae, or dark matter itself.
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?
Missing dark matter in a nearby dwarf galaxy
A satellite of Andromeda is missing an important ingredient — so where did it go?
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.
Galactic thick discs bursting onto the scene
The Milky Way’s disc is made up of two components — but where did they come from?