SUNSET: 
The Black Hole Files with Camille Carlisle
Black Hole Rain
The planned LISA gravitational-wave detector might discover a shower of hundreds of small black holes falling in galactic centers.
Travel Diary: Astronomical Adventures in the Canaries
The week of September’s new Moon, a passel of astro-enthused passengers explored one of the world’s premier observing locations.
Solar Cycle May Trigger Clouds on Neptune
Nearly 30 years of observations indicate that Neptune’s clouds and brightness vary with the Sun’s activity.
Black Hole May Have Formed by Direct Collapse
Astronomers may have spotted a supermassive black hole in the early universe that formed when a gargantuan gas cloud imploded.
A Jekyll-Hyde White Dwarf
The white dwarf J2033 seems to switch rapidly between two compositions.
Star Caught Swallowing a Planet
For the first time, astronomers have witnessed a star eat an exoplanet.
First Image of Black Hole Shadow and Jet Together
For the first time, astronomers have seen how the big plasma jet shot out by a supermassive black hole connects to the material falling into the black hole.
The First Black Hole Image, Take Two
A new analysis of Event Horizon Telescope data sharpens our view of the glowing gas encircling the black hole.
The Universe Is Too Smooth By Half
Results from a complex new analysis support cosmologists’ suspicions that something is missing from our understanding of the universe.
Familiar Fluffy Triangulum Galaxy Has Hidden, Two-Armed Pattern
Astronomers have discovered that one of the Milky Way’s nearest galactic neighbors has dramatically changed its looks in the recent past.
The Challenge of Weird Black Hole Mergers
When spacetime shivers last only a fraction of a second — as in the case of the massive-black-hole merger GW190521 — astronomers struggle to uncover their origins.
Hotspot Zooms Around Our Galaxy’s Black Hole
Astronomers have detected a bubble of hot gas circling our galaxy’s central black hole soon after seeing a flare, suggesting both arose from the same process.
The Black Hole Files with Camille Carlisle
Monstrous Black Holes Spin More Slowly — But Why?
X-ray observations add to growing evidence that the most massive black holes have a different past than their lightweight peers.
The Black Hole Files with Camille Carlisle
Astronomers Unveil Image of the Milky Way’s Central Black Hole
Using a worldwide array of telescopes, the Event Horizon Telescope team has given us our first look at Sagittarius A*.
10 New Merger Events in Gravitational-Wave Data
An independent team has found additional black hole mergers in LIGO data.
Are These the Most Distant Galaxies Yet Seen?
Two fuzzy red objects in the early universe may be galaxies shining at us from only a few hundred million years after the Big Bang.
The Black Hole Files with Camille Carlisle
“Closest Black Hole” Doesn’t Exist, After All
Astronomers combined forces to confirm that a black hole proposed to lie a mere 1,000 light-years away isn’t really there.
Black Hole Spins Crookedly
Astronomers have found a black hole leaning decidedly askew in its orbit with a star.
The Black Hole Files with Camille Carlisle
Third Gravitational-Wave Catalog Released
The latest results from LIGO, Virgo, and KAGRA bring several key revelations, including that black holes tend to come with certain masses.
Plutonian Mounts Aren’t Ice Volcanoes
Careful study of data from the New Horizons mission indicates that an iconic, caldera-looking feature isn’t what it seems.
