Simulations reveal asymmetric diffusion of magnetic skyrmions through an off-center gate

Diffusion is a fundamental natural phenomenon that can be observed across a wide range of length and time scales. It plays a key role in many fields, including physics, biology and economics. In particular, asymmetric or directional diffusion of particle systems has attracted growing interest for practical applications, including the development of unconventional artificial intelligence (AI) hardware, where it could enable nonlinear, geometry-controlled information processing.

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Using plutonium to probe the universe: Magneto‑ν experiment advances dark matter and neutrino research

Astronomers can’t see dark matter directly, but they know it’s there: Its gravity shapes galaxies and the large-scale structure of the cosmos. In an effort to uncover the composition of this hidden mass, a team at Lawrence Livermore National Laboratory (LLNL) is pursuing evidence of particles that exist beyond the standard model of physics.

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Gamma-ray signal could be long awaited evidence for WIMPs

Dark matter is known to make up roughly 85% of all mass in the universe, as evidenced by the way galaxies spin and how galaxy clusters are held together under gravity. Yet despite decades of searching, physicists have never managed to detect the elusive substance directly.

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Lunar soil reads as a cosmic time capsule for exploding stars

When a star reaches its final stages of life, it ends in a bright, powerful explosion called a supernova and scatters material across the universe. A new study led by a University of Hawai’i at Mānoa researcher has discovered that the moon’s mixed-up soil can be read as a cosmic time capsule for exploding stars. The work is published in the journal Physical Review Letters.

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Naked photobombing comet found in public image

Sometimes images are released before anyone realizes they have been photobombed, meaning something unexpected showed up in the background. A team of researchers found a naked photobombing comet in publicly available archival data from the Subaru Telescope, resulting not in mirth but in serious scientific discoveries.

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Video: Houston cops hop into Uber during foot pursuit

Video from inside Uber driver Anthony Baines’s vehicle shows two officers getting into his car and telling him to drive after a fleeing suspect

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BWC: Ohio officer fires single shot, killing suspect holding woman at knifepoint

The West Chester Police officer fired one round after the suspect pulled the injured woman to the ground while holding her at knifepoint

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New gallery of galaxies from NASA’s Chandra X-ray Observatory released

Galaxies are like cosmic gems, each with characteristics including size and shape that make them distinct. A new gallery released today from NASA’s Chandra X-ray Observatory and other telescopes displays a collection of galactic images that showcase this variety.

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Exact calculations sharpen view of atomic nuclei

Every high-energy nuclear collision leaves behind a trail of clues about the structure of atomic nuclei. Deciphering those clues, however, depends on the accuracy of the underlying theory. Physicists at Osaka Metropolitan University have now performed a full calculation within Glauber theory, a cornerstone framework for describing high-energy nuclear collisions.

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Chemical physicists quantitatively model electron interactions in real quantum materials

A team of scientists from Caltech and Yale University has shown for the first time how to accurately quantify an important quantum phenomenon in metals, called the Kondo effect, for specific real materials. Unlike previous approaches, which for decades have relied on simplified models to qualitatively describe the effect, the new work uses the actual atomic and electronic structures of materials to solve the problem directly.

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Ohio dispatcher resigns after investigation finds more than 20K unauthorized ALPR searches

A site that tracks Flock usage via public records requests found that one user in the Highland Heights PD searched the system more than 20,000 times in just over a year

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‘Now boarding’ … 240,000 miles from Earth, at the moon’s first airport

The moon’s getting its first airport, and it’s about to get busy. Within the next two decades, NASA’s planned Gateway—humanity’s first lunar spaceport—may become a bustling hub for Orion crew capsules, lunar landers, cargo vehicles and astronauts traveling between Earth, the moon and, eventually, destinations in the deep unknown.

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The little red dots of our cosmos might hide something big

Little red dots may reside in small, dense galaxies with total masses equivalent to around 1 billion times that of the sun, according to research published in Nature Astronomy.

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Setting limits on phase transitions in the dark energy era

The universe is known to be expanding at an accelerating rate. Physicists typically attribute this acceleration to dark energy, a mysterious component of the universe that exerts negative pressure, causing space to expand faster. Dark energy is thought to have become the predominant influence on the universe’s evolution around 3–4 billion years ago, at the beginning of what is known as the dark energy era.

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Bright ideas accelerate the hunt for quantum emitters

The search for materials that can power future quantum technologies is accelerating, but identifying the most promising candidates remains painfully slow. Evaluating whether a material can efficiently emit quantum light requires computationally intensive simulations, making it difficult to screen the vast number of available materials.

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