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Thorium plated steel points to smaller nuclear clocks
Los Angeles CA (SPX) Dec 11, 2025 Last year a UCLA-led team achieved a long-sought goal in nuclear spectroscopy by making radioactive thorium-229 nuclei absorb and emit photons in a controlled way, a capability scientists had pursued for about 50 years. That work, first proposed by the group in 2008, opened the door to nuclear clocks with very high precision that could influence navigation and tests of fundamental physics. The approach relies on the rare isotope thorium-229, which must be extracted from weapons-grade uranium, leav ... read more |
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New island of inversion found in proton neutron symmetric molybdenum nucleiTokyo, Japan (SPX) Dec 09, 2025 For decades, nuclear physicists have known that so called islands of inversion mark regions of the nuclear chart where standard shell structure breaks down and magic numbers vanish in favor of stron ... more 
Quasar X ray link to black hole environment found to evolve over cosmic timeLondon, UK (SPX) Dec 14, 2025 Astronomers using new X ray data have found evidence that the structure of matter around supermassive black holes has changed over billions of years, challenging a quasar relationship that has been ... more 
Gravitational lens time delays refine Hubble constantTokyo, Japan (SPX) Dec 09, 2025 Astronomers are testing a new way to measure how fast the universe is expanding by using time delays in gravitationally lensed images of distant quasars, in an effort to clarify the long-standing te ... more 
Star wobble reveals black hole dragging spacetimeBerlin, Germany (SPX) Dec 11, 2025 Astronomers have reported the first clear observation of a swirling distortion in spacetime produced by a rapidly spinning black hole, seen through the motion of material left over from a disrupted ... more |
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Astronomers tighten expansion rate gap in universe measurementsLos Angeles CA (SPX) Dec 05, 2025 A team of astronomers using several ground and space-based observatories, including the W. M. Keck Observatory on Maunakea, has produced one of the most precise independent measurements yet of the u ... more 
Decoded star reveals signs of distant stellar merger and black hole companionLos Angeles CA (SPX) Nov 27, 2025 Astronomers at the University of Hawaii Institute for Astronomy analyzed the vibrations of a distant red giant star now orbiting a quiet black hole in the Gaia BH2 system. Using NASA's Transiting Ex ... more 
Diamond defects, now in pairs, reveal hidden fluctuations in the quantum worldPrinceton, NJ (SPX) Nov 27, 2025 In spaces smaller than a wavelength of light, electric currents jump from point to point and magnetic fields corkscrew through atomic lattices in ways that defy intuition. Scientists have only ever ... more 
A simple fiber-optic cable links reconfigurable quantum network in EdinburghLondon, UK (SPX) Nov 27, 2025 Researchers at Heriot-Watt University have constructed a prototype quantum network that connects two smaller networks into an eight-user system. This configuration enables both routing of entangleme ... more 
End of mission for Atacama Cosmology Telescope opens new avenues in cosmologyParis, France (SPX) Nov 25, 2025 The Atacama Cosmology Telescope (ACT) has concluded nearly two decades of operation, closing a chapter in observational cosmology and initiating new directions for research. The ACT Collaboration ha ... more |
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Optical technique enables generation of hypersound waves in perovskite crystals
Berlin, Germany (SPX) Nov 25, 2025 Researchers from TU Dortmund University, University of Wurzburg, and Le Mans Universite have demonstrated the optical generation of shear hypersound pulses with large amplitudes in metal halide perovskites, published in Science Advances. While these materials have previously drawn interest for their role in photovoltaics, the new results indicate suitability for optically driven devices that generate and detect sound waves at sub-terahertz frequencies. Potential applications extend across electronic, ph ... read more 
Advances in structured light and machine intelligence reshape photonicsTokyo, Japan (SPX) Nov 24, 2025 Scientists are now using light in new, more complex ways, enabled by artificial intelligence (AI). Structured light - light that is carefully shaped and controlled to have complex features - can be ... more |
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Efficient quantum process tomography for enabling scalable optical quantum computingTokyo, Japan (SPX) Nov 24, 2025 Optical quantum computers are gaining attention as a next-generation computing technology with high speed and scalability. However, accurately characterizing complex optical processes, where multipl ... more 
A new angle of study for unveiling black hole secretsSt. Louis, MO (SPX) Nov 20, 2025 An international collaboration of physicists including researchers at Washington University in St. Louis has made measurements to better understand how matter falls into black holes and how enormous ... more 
Reading a quantum clock costs more energy than running it, study findsOxford UK (SPX) Nov 15, 2025 A study led by the University of Oxford has identified a surprising source of entropy in quantum timekeeping - the act of measurement itself. In a study published 14 Nov in Physical Review Letters, ... more 
A galaxy with earliest star signatures found during cosmic noonTokyo, Japan (SPX) Nov 15, 2025 Researchers led by the Department of Astronomy at Tsinghua University have identified a galaxy labeled CR3, which shows evidence of containing stars from the earliest phase of the universe. The team ... more 
New research with GW230814 upholds Hawking black hole area lawTokyo, Japan (SPX) Nov 15, 2025 Researchers from Purple Mountain Observatory have conducted an observational test of the black hole area law. Using the gravitational-wave event GW230814, which features a high signal-to-noise ratio ... more |
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