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A subtle return of La Niña

A weak La Niña emerged in the equatorial Pacific in late 2025, and scientists are watching how it may help shape weather and climate in the months ahead.

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SpaceX squeezes in 100th Space Coast launch, but weather delays ULA, 2nd SpaceX mission

SpaceX managed to find a lull in the winds early Monday, but a second SpaceX launch as well as one from United Launch Alliance opted to wait at least a day before trying to add to the Space Coast’s rocket mission total.

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Rare brown dwarf discovered orbiting ancient star

Astronomers from the Harvard-Smithsonian Center for Astrophysics (CfA) and elsewhere report the discovery of a new brown dwarf about 60 times more massive than Jupiter. The newfound substellar object, designated TOI-7019 b, is a brown dwarf known to orbit a star that is part of the Milky Way’s ancient thick disk. The finding is detailed in a paper published December 5 on the arXiv preprint server.

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Man sentenced to 20 years in prison after assaulting, strangling ICE officer

Diego Barron-Esquivel, described as a Mexican national, “did intentionally and forcibly assault, resist, oppose, impede, intimidate and interfere with” an ICE agent, court documents show

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Forget stardust—it was star ice all along

Carl Sagan famously said that “We’re all made of star stuff.” But he didn’t elaborate on how that actually happened. Yes, many of the molecules in our bodies could only have been created in massive supernovae explosions—hence the saying—and scientists have long thought they had the mechanism for how settled: the isotopes created in the supernovae flew here on tiny dust grains (stardust) that eventually accreted into Earth, and later into biological systems.

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NASA’s Roman telescope will observe thousands of newfound cosmic voids

Our universe is filled with galaxies, in all directions as far as our instruments can see. Some researchers estimate that there are as many as 2 trillion galaxies in the observable universe. At first glance, these galaxies might appear to be randomly scattered across space, but they’re not. Careful mapping has shown that they are distributed across the surfaces of giant cosmic “bubbles” up to several hundred million light-years across. Inside these bubbles, few galaxies are found, so those regions are called cosmic voids. NASA’s Nancy Grace Roman Space Telescope will allow us to measure these voids with new precision, which can tell us about the history of the universe’s expansion.

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Massive stars make their mark in Hubble image

This NASA/ESA Hubble Space Telescope image features a glittering blue dwarf galaxy called Markarian 178 (Mrk 178). The galaxy, which is substantially smaller than our own Milky Way, lies 13 million light-years away in the constellation Ursa Major (the Great Bear).

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The hidden physics of knot formation in fluids

Knots are everywhere—from tangled headphones to DNA strands packed inside viruses—but how an isolated filament can knot itself without collisions or external agitation has remained a longstanding puzzle in soft-matter physics.

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Integrative quantum chemistry method unlocks secrets of advanced materials

A new computational approach developed at the University of Chicago promises to shed light on some of the world’s most puzzling materials—from high-temperature superconductors to solar cell semiconductors—by uniting two long-divided scientific perspectives.

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Near-infrared light enables wireless power and data transfer for medical implants

A new study from a research team at the Center for Wireless Communications Network and Systems (CWC-NS) at the University of Oulu has introduced an approach using near-infrared (NIR) light beyond light therapy to facilitate simultaneous wireless power transfer and communication to electronic implantable medical devices (IMDs). Previously, the research team demonstrated that NIR light for wireless communication is feasible, and now the team made progress by involving wireless charging capabilities using the same light.

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Scientists create stable, switchable vortex knots inside liquid crystals

The knots in your shoelaces are familiar, but can you imagine knots made from light, water, or from the structured fluids that make LCD screens shine?

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Room-temperature electron behavior defies expectations, hinting at ultra-efficient electronics

Scientists have discovered a way to efficiently transfer electrical current through specific materials at room temperature, a finding that could revolutionize superconductivity and reshape energy preservation and generation.

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4 arrested, charged with plotting New Year’s Eve bombing attacks in Southern California

One of the suspects created a detailed plan to bomb five or more companies in the attack; two of the suspects had also planned a bombing attack on ICE agents for 2026

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2.8 days to disaster: Why we are running out of time in low earth orbit

A “House of Cards” is a wonderful English phrase that it seems is now primarily associated with a Netflix political drama. However, its original meaning is of a system that is fundamentally unstable. It’s also the term Sarah Thiele, originally a Ph.D. student at the University of British Columbia, and now at Princeton, and her co-authors used to describe our current satellite mega-constellation system in a new paper available in pre-print on arXiv.

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Can scientists detect life without knowing what it looks like? Research using machine learning offers a new way

When NASA scientists opened the sample return canister from the OSIRIS-REx asteroid sample mission in late 2023, they found something astonishing.

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