A Repeating FRB
Mysterious, brief bursts of radio have been detected many times from what looks to be the same source for the first time.
Disentangling Dark Matter Physics
We can’t study dark matter directly by our usual means of studying the cosmos: light. But dark matter leaves its fingerprints on the universe in other ways…
Holding on to Exomoons
Moons: all the giant planets in our solar system have them. Are giant exoplanets similarly ringed with moons? Here’s one reason why they might be missing some.
The Brightest Hot DOG in the Universe
What makes up the innards of the brightest galaxy in the universe?
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.