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When water drains from a bathtub, a whirlpool often forms above the drain, and its narrow core can start to wobble and twist. For almost 150 years, physicists have predicted that these wobbles can become turbulent, passing energy from large ripples down to ever smaller ones. Until now, however, this “Kelvin-wave turbulence” had never been […] Astronomers have discovered a faint population of young stars extending far beyond the known edge of the nearby spiral galaxy Messier 74. The finding suggests the galaxy is nearly twice as large as previously measured. The new study was published Sept. 4 in Astronomy & Astrophysics. Go to Source When the universe was still in its infancy—only 500 million years after the Big Bang, or about 3% of its current age—some of the universe’s earliest stars and galaxies had already formed. Astronomers have long predicted that much of the gas surrounding these young galaxies must have remained relatively pristine, composed mostly of hydrogen and […] Astrophysicists from The University of Hong Kong (HKU), working with a research team led by Beijing Normal University (BNU), have developed a more physically realistic approach to testing how ultralight, or “fuzzy,” dark matter could influence gravitationally lensed images. The study is the first to make gravitational-lensing predictions directly from three-dimensional wave simulations of fuzzy […] The asteroid Bennu orbits the sun once every 1.2 years and approaches Earth every six years, passing within around 300,000 kilometers. NASA took advantage of this to collect material from the celestial body. In a spectacular operation in 2023, the US space agency collected samples from the surface of the asteroid Bennu by its OSIRIS-REx […] The North Port officer was assisting people involved in a crash on I-75 when another vehicle struck the cruiser from behind Go to Source The Compact Accelerator System for Performing Astrophysical Research (CASPAR) recreates conditions inside stars to study how elements are made. The experiment recently restarted with a new target—the ninth element on the periodic table, fluorine. Go to Source A researcher from Sejong University has used a new theory of gravity proposed by Erik Verlinde to predict the observed central surface density of dark matter. The study was published in Physics of the Dark Universe on Sept. 20. Go to Source Scientists have shown that the two exponents (inelastic scattering exponent and dephasing exponent) commonly used to describe electron scattering in graphene do not necessarily follow the same behavior. Using gated epitaxial graphene, a multi-institutional team of researchers independently extracted the two exponents through current-heating measurements and weak-localization analysis. The contrasting gate-voltage dependence provides evidence that […] Take a second and turn it into trillions of moments. Measure each one. That’s how precisely an atomic clock at Singapore’s Centre for Quantum Technologies (CQT) keeps time—and with record-setting accuracy, according to results published in Nature on Sept. 23. Go to Source NASA’s Hubble Space Telescope completed its 200,000th orbit around Earth on Sept. 19, marking another milestone for an observatory that continues to transform our understanding of the universe. Go to Source ShinyHunters claimed responsibility for the apparent breach and said it was “offended” by an FBI warning that described the group as cybercriminals Go to Source The man refused to provide Harris County deputies with any identification before eventually pulling out a gun, firing shots and chasing deputies Go to Source Unlike Earth, the moon no longer has a core-generated magnetic field. On our planet, the movement of liquid iron in the outer core generates a global magnetic field. This so-called geodynamo works on a similar principle to a bicycle dynamo, which converts mechanical motion into electrical energy. “Today, there is an ongoing heated debate as […] Intense exercise during long spaceflights helps maintain heart structure and function within a range needed to tolerate the low-gravity environment of Mars, a study co-led by a UT Southwestern Medical Center researcher suggests. The findings, published in Circulation, not only address an issue critical to future space missions but could also lead to better interventions […] |
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