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Altermagnetism is a new, third type of magnetism of great interest for spin-transport applications like computer memory. If properly harnessed, it could combine the benefits of the two existing types of magnetism, ferromagnetism and antiferromagnetism, ultimately reducing or eliminating heat during information transfer and increasing the ability to miniaturize next-generation technologies. Rice University’s Pengcheng Dai recently published a paper in Physical Review X describing the first successful efforts to put a proposed altermagnetic material into a single magnetic-domain state, allowing the research team to characterize the material’s intrinsic magnetic structure.
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It’s common to see images of astronauts on the International Space Station exercising, running on special treadmills and pedaling cycles designed for tight quarters.
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Astronomers have captured an unprecedented image of a cosmic recycling project in progress—fragments of a dying star being busted up, stripped and absorbed into interstellar space.
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The building blocks of rocky planets may have begun forming just 100 million years after the Big Bang—long before the first galaxies even existed—according to new research from the University of Portsmouth.
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In the image above, a faint trail of stars can be seen stretching across the galaxy. These structures, known as globular cluster stellar streams, are coherent stellar structures that retain a record of their dynamical history and can provide unique insights into the evolution of galaxies and the nature of dark matter.
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To date, close to 30,000 satellites have been launched into Earth’s orbit, leading to mounting concerns over the debris created when they collide. In a new analysis posted to the preprint server arXiv, Hugh Lewis of the University of Birmingham shows that satellite constellations can grow so large that they cross a critical size beyond which they generate unstable, runaway amounts of debris. The findings point to an urgent need for tougher rules on which satellites are allowed into orbit in the first place.
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One of nature’s greatest spectacles—a rare total solar eclipse—cast its shadow on Wednesday, briefly turning day into night in Russia’s remote Arctic north and western Iceland before heading toward mainland Europe.
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More than 70% of massive stars are born in close binary systems, where gravitational tugs and mass transfer between companions dramatically alter their evolution. Yet once the interaction ends—whether through mass transfer, merger or the supernova explosion of one partner—the surviving star often appears as a solitary object, hiding its turbulent past. For decades, astronomers have struggled to detect these hidden histories.
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A new study suggests a protective vest tested on a manikin during NASA’s first Artemis moonshot could drastically cut the radiation exposure of lunar astronauts during severe solar storms.
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There is a question that often comes up at every public talk I do, and I have never had a good answer to it—well, not an entirely confident one. What’s inside a black hole? The textbook reply is a singularity. Cross the event horizon, and everything falls inward to a point of infinite density where our equations return nonsense. It isn’t so much an answer as an admission that we’ve run out of physics.
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Pinellas County Deputy Troy Savetz took the woman from her home before they were both found dead inside a rental vehicle, Pasco County Sheriff Chris Nocco said
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Idaho State Police Specialist Steve McClain returned fire at the armed gunman outside the Twin Falls restaurant
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Deputy Betty Uriegas was patrolling during a tropical storm when a crash left her paralyzed; she had served with the Hall County Sheriff’s Office for nine years
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The reported $20 million planned purchase would equip ICE officers with Generated Low Output Voltage Emitters (G.L.O.V.E.)
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For more than two decades, the quasar PHL 1811 has been considered the prototype of a rare class of “intrinsically X-ray weak” quasars, thought to produce unusually little X-ray radiation. But in 2024, the Einstein Probe spacecraft caught the object in a bright X-ray flare. In a new study, astronomers combined that observation with more than 20 years of archival data to revisit the mystery. The findings were published in The Astrophysical Journal on July 28.
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