A new theorem predicts that stationary black holes must have at least one light ring
Black Hole Rings in Universe Sandbox ² « Universe Sandbox | blog
Research Team Discovers Path to Razor-Sharp Black Hole Images - Press Release | Institute for Advanced Study
File:Black hole optics.png - Wikipedia
The Black Hole Ultimate Solar System – PLANETPLANET
Astronomers Spot Unusual, Enormous Rings Around a Black Hole
Here's why the black hole photo looks like the Eye of Sauron - The Washington Post
A new theorem predicts that stationary black holes must have at least one light ring
Astronomers Discover Way to Get Sharp Images of Black Hole's Photon Rings | Sci.News
New telescopes may help spot 'photon ring' of first black hole imaged | Science News
Scientist dug deeper into the first ever direct image of a black hole and found a brilliant, hidden ring of light — just as theory always predicted they would. | The Independent
What Comes After Photographing a Black Hole's Event Horizon? Could we see the Photon Ring? - Universe Today
A Ring of Controversy Around a Black Hole Photo – Of Particular Significance
Black hole breakthrough: NASA 'hears black hole ring' – proving Einstein was right | Science | News | Express.co.uk
In a first, astronomers watch a black hole's corona disappear, then reappear | MIT News | Massachusetts Institute of Technology
Black Hole's Ring of Light Could Encrypt Its Inner Secrets | Quanta Magazine
Black Hole's Ring of Light Could Encrypt Its Inner Secrets | Quanta Magazine
Physics - Getting a Black Hole's Spin from its Photon Ring
All black holes should sport light rings
First Overtones "Heard" in the Ringing of a Black Hole | www.caltech.edu
NASA's new black hole visualizations showcase how gravity warps light
Astronomers release an improved image of a black hole : NPR
What is a black hole? | University of Chicago News
Ask Ethan: Why do black holes look like rings, not disks? - Big Think
Black Hole's Ring of Light Could Encrypt Its Inner Secrets | Quanta Magazine
