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A newly developed method allows researchers to dynamically switch chirality—a particular lack of mirror symmetry—to generate spin currents in semiconductors, researchers from Science Tokyo report. Their approach relies on the reversible insertion and removal of small chiral molecules from the interlayer gaps of a layered, nonchiral semiconductor material using electrochemistry.
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The new requirement, also under consideration in California, attempts to thwart the production of untraceable “ghost guns” that have turned up in crime
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As officers pursued a man who shot at a Harrison County deputy, the suspect shot at officers again before fleeing into woods; he was later found and fatally shot when he refused to drop his gun
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The Nevada Highway Patrol trooper fired shots at the suspect as he turned away from a lane of traffic to pin a trooper to a firetruck; a passenger in the vehicle was fatally struck
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Southwest Research Institute (SwRI) is developing electronics and flight software for the NASA/U.S. Geological Survey (USGS) Landsat 10 satellite, which is set to launch in 2031 to collect new and improved Earth observation data. The mission continues NASA’s and USGS’s partnership on the ongoing Landsat program, which has launched nine satellites since 1972 and provided more than 10 million images of Earth’s surface.
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A prototype quantum sensor developed by researchers at Imperial has demonstrated for the first time that a key principle behind next-generation quantum detectors can work under realistic conditions.
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An international team of scientists has identified a completely new type of rock from the red planet and, for the first time, discovered the mineral garnet in a Martian sample. The breakthrough offers a rare glimpse into Mars’ ancient past and could help researchers piece together the planet’s 4.5-billion-year geological history. The discovery was made by an international research team including James Darling, professor of Earth and planetary science, from the University of Portsmouth’s School of the Environment and Life Sciences.
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An international research collaboration between the University of Vienna and Lawrence Berkeley National Laboratory in the United States has used machine learning to re-examine one of the most debated signals in astrophysics. The so-called Galactic Center Excess (GCE), a faint, roughly spherical glow of gamma rays at the center of the Milky Way, has fascinated physicists for more than a decade. The new results suggest that an explanation in terms of dark matter cannot currently be ruled out. The results have now been published in the journal Physical Review Letters.
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Physicists have long been drawn to the nonlinear Hall effect: a subtle variant of the classical Hall effect, in which an electric voltage appears perpendicular to a current flowing through a material. Unlike its classical counterpart, the nonlinear version can arise even without breaking time-reversal symmetry, and its magnitude is tied to deep geometric properties of electron wave functions. So far, however, the behavior of the effect when a magnetic field is applied has remained poorly understood.
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One well-done gas giant, coming right up! That’s the latest from researchers analyzing NASA’s James Webb Space Telescope observations of HD 80606 b, an exoplanet four times the mass of Jupiter with an extremely elliptical orbit that sweeps close by its sun-like star. The research team is presenting its study and preliminary findings Tuesday at the 248th meeting of the American Astronomical Society (AAS248) in Pasadena, California.
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A team of scientists has used NASA’s Goldstone Solar System Radar and the U.S. National Science Foundation Green Bank Telescope (NSF GBT) to carry out the most extensive radar study to date of Europa, the ocean world orbiting Jupiter. By repeatedly “pinging” Europa with 3.5-centimeter (1.4-inch) radio waves between 2011 and 2024, the team measured how the moon reflects radar signals and confirmed that its icy surface scatters radio energy in an unusually strong and complex way not seen on rocky worlds.
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New research led by a scientist at IPAC—a science and data center for astrophysics and planetary science at Caltech—studying the hot Jupiter CoRoT-2 b has settled on one of the three leading hypotheses explaining why its atmosphere has a hot spot in the opposite direction from that seen on all other exoplanets of this type.
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Neutrinos are one of the fundamental particles of the universe. They live a ghostly existence with no electric charge, very little mass and extremely few interactions with matter. They are also the most abundant particles with mass in the universe and can be created through a variety of processes, such as the decay of heavy particles, nuclear reactions in the sun and the explosions of stars.
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SpaceX shares surged again Tuesday, lifting Elon Musk’s rocket company into the world’s top five in market value for most of the session as a record-breaking IPO gave way to a torrid buying frenzy.
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Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other solar systems, even if that was not their original intention. Five robotic explorers—Pioneer 10 and 11, Voyager 1 and 2, and New Horizons—are all on escape trajectories out of the solar system and might someday enter another one. They will no longer be operational at that point, but they serve as proof of concept that spacefaring civilizations do indeed build interstellar probes.
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