Metal Before It Was Cool: Super-Enrichment in the Early Universe
Galaxies in the early universe were mostly pure hydrogen. How, then, did one end up with so much metal just a billion years after the Big Bang?
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Could Interacting Dark Matter Solve a Problem with Our Models of the Universe?
If dark matter and normal matter could interact, it could ease the emerging tension between measurements of how smooth or clumpy the distribution of matter is in our universe.
Spotlight on Machine Learning in Astrophysics
Machine learning is increasingly popular in many fields of science, including astrophysics. Today’s post takes a look at how machine-learning techniques have been used in three research areas.
Could We Detect the Merger of Stellar-Mass and Supermassive Black Holes?
The gravitational waves emitted by stellar-mass black holes merging with one member of a supermassive black hole binary might be a prominent target for upcoming observatories like LISA.
How Did Arrokoth Get Its Mounds?
The New Horizons spacecraft flew by the Kuiper Belt object Arrokoth more than four years ago. Today, this fascinating, lumpy, bi-lobed object still holds plenty of mysteries.
Getting to Know the Supernova Next Door: SN 2023ixf
SN 2023ixf, which was discovered in May 2023 in the Pinwheel Galaxy, is the nearest extragalactic supernova observed in almost a decade. What did early data tell us about the event?
A Forge Without Iron
If you wanted to know what’s in the air of a lava planet, it wouldn’t be a good idea to go visit in person. Luckily, astronomers don’t have to.
A Fast Radio Burst Reveals Foreground Galaxy Clusters
Researchers take a wide view of an unusual repeating fast radio burst to decode the burst’s dispersed signal.
Investigating a Star-Formation Shutdown in the Early Universe
Why did a small galaxy stop forming stars less than 700 million years after the Big Bang? Cosmological simulations give some clues about why star formation stalled.
A New Class of Fast Transients Has Emerged in an Unlikely Place
Quiescent elliptical galaxies might harbor a new class of rare transients called luminous fast coolers, the physical origins of which remain unknown.