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3,476 articles

Galaxy mergers light up fastest growing black holes
Dec 18, 2025 (SPX)
Active galactic nuclei are periods when supermassive black holes at the center of galaxies accrete surrounding matter and gas and emit intense radiation. Our ow...
Quasar X ray link to black hole environment found to evolve over cosmic time
Dec 14, 2025 (SPX)
Quasars, identified in the 1960s, rank among the brightest known cosmic sources and are powered by supermassive black holes that draw in surrounding matter. As ...
Star wobble reveals black hole dragging spacetime
Dec 11, 2025 (SPX)
The team, led by researchers at the National Astronomical Observatories of the Chinese Academy of Sciences with support from Cardiff University, studied AT2020a...
Thorium plated steel points to smaller nuclear clocks
Dec 11, 2025 (SPX)
The approach relies on the rare isotope thorium-229, which must be extracted from weapons-grade uranium, leaving an estimated global supply of only about 40 gra...
Gravitational lens time delays refine Hubble constant
Dec 09, 2025 (SPX)
The expansion rate of the universe, known as the Hubble constant, describes how quickly galaxies recede as a function of distance, with local measurements indic...
CERN upbeat as China halts particle accelerator mega-project
Dec 09, 2025 (AFP)
Ten years ago, China announced its intention to build the Circular Electron Positron Collider (CEPC), which at 100 kilometres (62 miles) long would be the world...
New island of inversion found in proton neutron symmetric molybdenum nuclei
Dec 09, 2025 (SPX)
An international team from the Center for Exotic Nuclear Studies at the Institute for Basic Science, the University of Padova, Michigan State University, the Un...
KATRIN experiment rules out favored light sterile neutrino region
Dec 08, 2025 (SPX)
In work now reported in Nature, the KATRIN collaboration has carried out a direct search for such sterile neutrinos by examining the beta decay of tritium. The ...
Vast spinning galaxy filament mapped in nearby Universe
Dec 08, 2025 (SPX)
Cosmic filaments form the main framework of the cosmic web, consisting of long, thread-like arrangements of galaxies and dark matter that channel material acros...
Mars clocks run ahead of Earth by microseconds each day
Dec 08, 2025 (SPX)
The study extends earlier NIST work on precise timekeeping for the Moon to Mars, where the length of the day, the orbital period and the gravitational environme...
Astronomers tighten expansion rate gap in universe measurements
Dec 05, 2025 (SPX)
The researchers drew on data from Keck's Cosmic Web Imager together with observations from NASA's James Webb Space Telescope, the Hubble Space Telescope, and ES...
Two dimensional crystal reveals hexatic phase in real time
Dec 05, 2025 (SPX)
An international team led by the University of Vienna has now directly observed this hexatic phase in an atomically thin crystal of silver iodide AgI, resolving...
Diamond defects, now in pairs, reveal hidden fluctuations in the quantum world
Nov 27, 2025 (SPX)
Now Princeton researchers have developed a diamond-based quantum sensor that reveals rich new information about magnetic phenomena at this minute scale. The tec...
A simple fiber-optic cable links reconfigurable quantum network in Edinburgh
Nov 27, 2025 (SPX)
The new demonstration sets a milestone for quantum networks by achieving a level of flexibility and scalability not previously shown. Professor Mehul Malik of t...
Decoded star reveals signs of distant stellar merger and black hole companion
Nov 26, 2025 (SPX)
Lead author Daniel Hey explained, "Just like seismologists use earthquakes to study Earth's interior, we can use stellar oscillations to understand what's happe...
End of mission for Atacama Cosmology Telescope opens new avenues in cosmology
Nov 25, 2025 (SPX)
The latest ACT measurements confirm the value of the Hubble constant - a critical parameter indicating the present rate of cosmic expansion - by observing dista...
Optical technique enables generation of hypersound waves in perovskite crystals
Nov 25, 2025 (SPX)
Sound, as encountered in everyday life, corresponds to longitudinal waves traveling through air. In crystalline materials, however, shear waves can emerge, char...
Efficient quantum process tomography for enabling scalable optical quantum computing
Nov 24, 2025 (SPX)
KAIST announced on November 17th that a research team led by Professor Young-Sik Ra from the Department of Physics has developed a Multimode Quantum Process Tom...
Advances in structured light and machine intelligence reshape photonics
Nov 24, 2025 (SPX)
Researchers describe how mixing the orientation (polarization) of light with particular spatial patterns lets them focus it more sharply for better microscope i...
A new angle of study for unveiling black hole secrets
Nov 20, 2025 (SPX)
The scientists pointed a balloon-borne telescope called XL-Calibur at a black hole, Cygnus X-1, located about 7,000 light-years from Earth. "The observations we...
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