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…
Gravitational waves may be responsible for dark matter in the universe
Dark matter is thought to exist everywhere, wrapping around galaxies and helping to shape the largest things in…
The physics of no return: What actually happens if you get pulled into a black hole
In 1916, only a year after Albert Einstein had published his general theory of relativity, Karl Schwarzschild used…
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,…
Astronomers have discovered a collision between two neutron stars in a small galaxy
ⓘ Mikkehouse – Pixabay An artist’s illustration showing a neutron star. Recently, astronomers have discovered a collision between…
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…
Scientists develop a new way to measure the expansion rate of the universe
For years, cosmologists have argued over a simple question with an awkward answer: How fast is the universe…
Physicists Begin Building First-Ever Graviton Detector
Stevens Institute of Technology physicist Igor Pikovski and colleagues are developing the first experiment designed to capture individual…