The Darkest Galaxies
Astronomers have recently discovered a number of galaxies made almost entirely of dark matter. Today’s astrobite takes a closer look at one of them.
Catching a small galaxy in the act of formation
A dwarf irregular galaxy in the Lynx-Cancer void is cannibalizing its neighbors.
Reinventing star-formation
Just when you think you’ve understood star formation and how galaxies form, someone pulls the rug out from under you…
Teaching Computers How Galaxies Form
After learning about galaxy formation, computers can imitate millions of hours of calculations in just a few minutes.
How to grow a galaxy
How do galaxies grow? Today’s featured paper investigates the role of mergers between galaxies in assembling the most massive nearby galaxies.
Galaxy Groups and Clusters: Bristling with Satellites, Mostly Red
How do galaxy clusters form and evolve? Counting galaxies of different luminosities, masses, and colors can yield surprising insights.