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Tiny hologram inside a fiber lets scientists control light with incredible precision

Researchers in Germany have unveiled the Metafiber, a breakthrough device that allows ultra-precise, rapid, and compact control of light focus directly within an optical fiber. Unlike traditional systems that rely on bulky moving parts, the Metafiber uses a tiny 3D nanoprinted hologram on a dual-core fiber to steer light by adjusting power between its cores.

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This tiny iron catalyst could transform the future of clean energy

Hydrogen fuel cells could power cars, devices, and homes with nothing but water as a byproduct—but platinum’s cost holds them back. Chinese researchers have now unveiled a breakthrough iron-based catalyst that could rival platinum while boosting efficiency and durability. With its clever “inner activation, outer protection” design, this new catalyst not only reduces harmful byproducts

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Scientists finally pinpoint Jupiter’s birth using “molten rock raindrops”

Billions of years ago, Jupiter’s violent growth transformed the young solar system, smashing icy and rocky bodies together at incredible speeds. These cataclysmic collisions created tiny molten droplets called chondrules—microscopic time capsules later preserved in meteorites. New research shows that water vapor explosions from planetesimal impacts explain their origin, while also pinpointing Jupiter’s birth at

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Scientists switch on the world’s largest neutrino detector deep underground

Deep beneath southern China, JUNO has launched one of the most ambitious neutrino experiments in history. With its massive 20,000-ton liquid scintillator detector now operational, it’s poised to answer one of particle physics’ greatest mysteries: the true ordering of neutrino masses. Built over more than a decade and involving hundreds of scientists worldwide, JUNO not

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The Sun’s smallest loops ever seen in stunning new images

Astronomers using the Inouye Solar Telescope have captured the sharpest-ever images of a solar flare, revealing coronal loops as thin as 21 km wide. These threadlike plasma structures, imaged during an X1.3-class flare, confirm long-standing theories about loop scales and may represent the fundamental building blocks of flare activity. The discovery pushes solar science into

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