Black hole GW190521 may be a wormhole from another universe
For just one-tenth of a second in May 2019, the universe delivered a signal that did not fit…
“One of the Most Titanic Blasts in the Cosmos”: Gravitational Waves Support a “Forbidden Range” of Stellar Obliteration
Gravitational waves reveal an explosive “forbidden range” of stellar destruction so powerful that not even a black hole…
A Cosmic ‘Dead Zone’ for Black Holes Is Real, New Evidence Suggests
A recent LIGO catalog update more than doubled the number of confirmed gravitational wave signals—ripples in spacetime caused…
APOD: 2026 March 26 – Black Holes and Neutron Stars: 218 Mergers and Counting
APOD: 2026 March 26 – Black Holes and Neutron Stars: 218 Mergers and Counting Discover the cosmos! Each…
Expanding catalog of black hole collisions is rewriting the history of the universe
Between May 2023 and January 2024, a global network of gravitational-wave detectors picked up 128 new cosmic signals,…
Newly discovered ripples in spacetime put Einstein’s general relativity to the test
When black holes collide, the crash generates ripples in the fabric of spacetime—gravitational waves. These distortions travel far…
Double Cosmic Explosion Gives Birth to Unprecedented ‘Superkilonova’
When massive stars die, they go out in fiery explosions called supernovas. On rarer occasions, two nearly dead…
Daylight Savings Time Is So Bad, It’s Messing With Our View of the Cosmos
Tracking gravitational waves—invisible ripples in space-time from intense astronomical events—pushes the limits of what astronomers must do to…
Scientists Found a Black Hole That Shouldn’t Exist. Now Physics Has a Problem.
Here’s what you’ll learn when you read this story: Over the past decade, the LIGO-Virgo-KAGRA (LVK) network has…
Astronomers Detect a Black Hole Merger That’s So Massive It Shouldn’t Exist
Gravitational waves—ripples in space-time caused by violent cosmic events—travel at the speed of light in every direction, eventually…