#black-holes

A new Hubble image of IC 486 highlights a barred spiral galaxy 380 million light-years away, where recent star formation and a bright active galactic nucleus coexist in the same luminous structure.

Physicist John Pendry, long known for the invisibility cloak, is now using metamaterial ideas to probe more ambitious territory, including materials that could simulate black-hole-like physics.

A new study of more than 1 million galaxies and over 8,000 actively growing supermassive black holes points to a simple explanation for the modern slowdown in black hole growth: not enough cold gas.

A new analysis of gravitational-wave detections suggests a missing band of black hole masses, supporting the idea that some massive stars explode so completely they leave nothing behind.

Astronomers detected gravitational waves from a massive black hole merger in November 2024, followed seconds later by a short gamma-ray burst—potentially the second confirmed multi-messenger cosmic event in history.

The LOFAR telescope array has completed the most comprehensive radio survey of the universe ever conducted, mapping 13.7 million cosmic sources including supermassive black holes, merging galaxies, and supernova remnants. The survey opens a new window on phenomena invisible to optical telescopes.

The joint NASA-JAXA X-ray mission XRISM has revealed the most violent turbulence ever detected in a galaxy cluster, centered on the supermassive black hole M87*. The spacecraft's unprecedented ability to measure gas velocities has transformed our understanding of how black holes shape their cosmic surroundings.

Columbia University scientists working with the Breakthrough Listen project have identified a millisecond pulsar candidate spinning at 8.19 milliseconds near Sagittarius A*. If confirmed, the discovery could provide a powerful new tool for testing Einstein's general relativity under extreme gravitational conditions.