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The more astronomers learn about the universe’s earliest galaxies, the stranger they seem. Many of their surprising properties may be explained by differences between their massive stars and those in galaxies like our own Milky Way. A new University of Utah-led survey with the Hubble Space Telescope is shedding light on the stellar astrophysics operating in early galaxies.
A research team led by Professor Jung-Il Hong of the Department of Physics and Chemistry at DGIST has successfully used current pulses to alter the spin configuration within a ferrimagnetic material, lowering its “compensation temperature”—the temperature at which opposing magnetizations cancel each other out—by up to approximately 110 K.
A Galveston County Sheriff’s deputy was captured on bystander video following a vehicle extremely closely without emergency lights activated
A “convergence” of city officials distracted police at the Bite of Seattle shooting scene from releasing information to the public, while budget constraints led to fewer cops staffing the event, Seattle PD stated
Exoplanets are exotic worlds orbiting distant stars far beyond our solar system. Ever since the first ones were discovered in the 1990s, astronomers have turned their attention to these distant worlds to understand more about them. Now, for the first time, scientists have detected radio signals coming directly from one of these planets, a massive gas giant named β Pictoris b.
The suspect was undergoing a medical evaluation after allegedly attacking an elderly couple when he gained access to the Ormond Beach officer’s holstered handgun
More and more details about 3I/ATLAS are filtering through the scientific process as time goes on. Our third known interstellar visitor attracted the attention of some of the world’s most powerful observatories when it was discovered in July 2025, and some of those telescopes found something peculiar—the isotopes it contained appeared different. A new paper submitted to The Astrophysical Journal Letters (and available as a preprint on arXiv) by Kenji Furuya of the RIKEN Pioneering Research Institute in Japan and his co-authors shows that the isotopic discrepancy is likely due to the “low metallicity” of the stellar nursery in which 3I/ATLAS was born.
An international team of astronomers from ASTRON, JIVE, the University of Amsterdam and other institutions has found the first so-called “microblazar” in the Milky Way. This stellar system is composed of a massive star and a black hole with a jet that is pointed toward Earth. The researchers also identified the region where the jet hits a molecular cloud as a place where particles are accelerated to ultra-high energies, likely up to petaelectronvolts. This would make microblazars one of the most powerful particle accelerators in the galaxy. The research was appears in Astronomy & Astrophysics.
Most kids learn in elementary school that the seasons are caused by Earth rotating on a tilted axis during its yearly orbit around the sun. The substantial tilt, about 23.5 degrees, is thought to be the result of an ancient planetary body, Theia, smashing into Earth about 4.5 billion years ago, in the same cataclysmic collision that formed the moon.
The crash occurred as state troopers pursued a vehicle that fled a traffic stop; the vehicle crashed head-on into a concrete barrier, killing four occupants and an unborn baby
Reliably verifying the location of a device connected to the internet or other networks is important for various real-world applications. For instance, it could be valuable for authorizing financial transactions, securing communications and controlling who can access specific databases or services.
Understanding the origin, acceleration and propagation of high-energy cosmic rays has been a century-old mystery in astrophysics. Recently, joint observations from China’s Einstein Probe (EP) satellite and the Large High Altitude Air Shower Observatory (LHAASO) showed an extraordinarily long X-ray tail near a pulsar about 4,600 light-years (27 quadrillion miles) from Earth—one that had never before been seen in full. The tail extends about 42 light-years (250 trillion miles) and stretches in the same direction as ultrahigh-energy gamma-ray emission detected by LHAASO, with the two showing a close spatial match.
A University of Iowa-led research team has reported in a new study the most detailed observations to date of the bow shock at Jupiter, our solar system’s gas giant. The findings from NASA’s Juno mission reveal key differences between Jupiter’s bow shock and Earth’s. They also may lead to a better understanding of the physics of how shocks function in even more powerful energy releases, such as those from dying stars. The research is published in Nature Communications.
Students in Cornell’s Space Systems Design Studio (SSDS) have released mission results for two unique light-sail experiments. These sails are slightly larger than a pizza box and harness momentum from photons to accelerate to high velocities. With ChipSats onboard—gram-scale spacecraft that fit in the palm of your hand—the sails can become free-flyers. They origami-fold into CubeSats for launch and completely separate when deployed, allowing them to be far smaller and lighter than traditional solar sails. The ChipSats provide all ground communications and steering capabilities for a fraction of the mass and cost.
The man yelled at Salt Lake City officers and pulled out a knife as he fled; he refused to drop the knife, and after a TASER deployment, the officers fired shots
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