An international team of astronomers has performed multi-band radio observations of diffuse radio emission in a galaxy cluster known as Abell 3558. As a result, the observational campaign detected that the cluster hosts a peculiar mini-halo. The finding was detailed in a paper published July 10 on the arXiv preprint server.
A resonance effect can significantly affect how a three-atom molecule cools down when excited, RIKEN physicists have found. The study, published in Physical Review A, highlights the complexity of the relaxation dynamics of even simple molecules.
Small, energetic molecules in a vacuum—such as those in the upper atmosphere or interstellar space —can either break apart or cool down by releasing their energy through emitting light.
“The energy-dissipation mechanism of molecules via radiative cooling is crucial to understanding the stability of hot, excited molecules,” says Toshiyuki Azuma of the RIKEN Atomic, Molecular & Optical Physics Laboratory. “It’s essential in chemical reactions in dilute environments such as Earth’s upper atmosphere.”
We’re now a step closer to understanding how the Universe avoided an antimatter apocalypse. CERN scientists have discovered tantalizing clues of a fundamental difference in the way physics handles matter and antimatter.
Experiments at the Large Hadron Collider (LHC) have verified an asymmetry between matter and antimatter forms of a particle called a baryon.
Known as a charge-parity (CP) violation, the effect has only previously been detected in another class of particles, called mesons. But experimental evidence in baryons, which make up the bulk of the Universe’s matter, is something physicists have been long hunting for.
What Is a Particle?
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Researchers at Florida State University have created new polymer blends that could make batteries safer and longer-lasting.
Using the TUBITAK National Observatory and ESA’s Gaia satellite, astronomers from the Istanbul University in Turkey and elsewhere have conducted comprehensive observations of two open clusters, namely: Czernik 41 and NGC 1342. Results of the observational campaign, published July 7 on the arXiv preprint server, deliver important insights into the properties of these clusters.
Open clusters (OCs) are groups of stars formed from the same giant molecular cloud and loosely gravitationally bound to each other. Astronomers are interested in inspecting OCs in detail as such studies could be crucial for improving our understanding of the formation and evolution of our galaxy.
That is why a group of researchers led by Istanbul University’s Burçin Tanık Öztürk decided to take a closer look at two well-known OCs—Czernik 41, discovered in 1966, and NGC 1,342, dubbed the Stingray Cluster, which was identified by William Herschel in 1799. For this purpose, they employed the T100 telescope at the TUBITAK National Observatory in Turkey and analyzed the data from the Gaia satellite.
An international team of astronomers has uncovered new evidence to explain how pulsing remnants of exploded stars interact with surrounding matter deep in the cosmos, using observations from NASA’s IXPE (Imaging X-ray Polarimetry Explorer) and other telescopes.
Scientists based in the U.S., Italy, and Spain, set their sights on a mysterious cosmic duo called PSR J1023+0038, or J1023 for short. The J1023 system is comprised of a rapidly rotating neutron star feeding off of its low-mass companion star, which has created an accretion disk around the neutron star. This neutron star is also a pulsar, emitting powerful twin beams of light from its opposing magnetic poles as it rotates, spinning like a lighthouse beacon.
The J1023 system is rare and valuable to study because the pulsar transitions clearly between its active state, in which it feeds off its companion star, and a more dormant state, when it emits detectable pulsations as radio waves. This makes it a “transitional millisecond pulsar.”
WASHINGTON — The U.S. Space Force estimates it would need more than $4 billion to fund a proliferated low Earth orbit constellation known as MILNET that would provide global communications services, making it the largest item in the service’s fiscal year 2026 “unfunded priorities list” submitted to Congress last week.