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Researchers have used some of the most detailed simulations yet of the early universe to investigate how the first stars and galaxies formed. Led by researchers at the University of Bath in the U.K., alongside collaborators at the University of Chicago in the U.S. and the Institut d’Astrophysique de Paris in France, the MEGATRON project uses advanced simulations to explore how the first stars and galaxies lit up the previously dark cosmos and enriched it with the chemical elements that would later become the building blocks of everything around us.
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Boats passing over smooth water form a pair of diffusion wakes behind them veering off at a certain angle. Turbulence occurs along the line directly behind the boat, but the two diffusion waves are at a theoretical angle of 19.5° from the same line, for deep, ideally smooth water.
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In materials chemistry, identifying common parameters that can organize magnetic ground states across complex intermetallic compounds remains a central challenge. Researchers have long used chemically tunable parameters to control magnetic properties. One is valence-electron concentration, commonly discussed as the electron-per-atom (e/a) ratio. The e/a ratio has been widely used to classify magnetic ground states in metallic systems such as Heusler alloys and approximant crystals.
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This summer, exoplanet science—the study of planets orbiting stars beyond our sun—took a big step forward. Reports of helium gas escaping from the atmosphere of LHS 1140b propelled this exoplanet from the pages of scientific journals into the mainstream media.
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Isaac Newton is typically portrayed as a solitary scientist with intense focus who was obsessed with power and deeply egotistical. But a new book by Caltech historians Jed Buchwald and Mordechai Feingold takes a deeper look at Newton’s life in the two decades leading up to the 1687 publication of his groundbreaking text, Principia Mathematica, when he was 44. Using newly digitized scans of Newton’s early writings, Buchwald and Feingold uncover a portrait of the young polymath as a curious and social scholar whose interests were often fleeting.
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Photos taken using a microscope reveal the colorful, kaleidoscope-like crystal structure of a new NASA-made material that could be used for manufacturing during future space missions. Developed at NASA’s Glenn Research Center in Cleveland, the material could be created directly on the moon or Mars, allowing NASA to pack fewer supplies—saving weight and reducing launch costs.
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Researchers at AIST have developed a device that measures the absolute surface profile of curved optical elements with high precision without touching them.
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Gov. Gavin Newsom approved measures banning shock gloves and officer face coverings while expanding state oversight of immigration detention centers
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New research led by the University of Michigan is helping set the stage for future observatories to characterize rocky planets outside our solar system, planets that could prove life isn’t confined to Earth. The new research represents the most sensitive modern search for giant planets in a nearby binary system—a system with two stars orbiting each other—known as 70 Ophiuchi AB, or 70 Oph AB.
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SpaceX sent its Starship super-rocket on its first orbital flight—a shorter-than-planned test mission that put operational Starlink satellites into orbit for the first time.
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Scientists have helped solve a longstanding mystery about how Earth remained habitable after oxygen first accumulated in its atmosphere more than 2 billion years ago, providing evidence that ancient ocean chemistry sustained life-friendly conditions.
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Miami-Dade Deputy Luis Hernandez was declared the winner by submission after placing Sedriques Dumas in a standing guillotine chokehold in the first minute of the first round
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The ex-deputy had called the Boulder County Sheriff’s Office and made threatening comments; he then shot at Broomfield PD cruisers before driving to the sheriff’s headquarters and firing a rifle at the entrance
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A commercial mission to boost NASA’s Neil Gehrels Swift Observatory ended without raising the spacecraft’s orbit, but the agency and Katalyst Space gained experience that will benefit future in-space servicing programs.
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