Astronomy Apr 14, 2026

Not so dark with Alena Tensor: Math framework could explain dark matter without invisible particles

Alena Tensor is a relatively new mathematical approach that allows for arbitrary curving and straightening of analyzed spacetimes. As it turns out, generalizing this model to all known fields and fully describing matter, ...

Earth Sciences Apr 14, 2026

Saltwater is closing in on coastal groundwater, putting billions and food supplies at risk

Coastal groundwater is a key source of drinking water in many regions of the world. However, it is threatened by overabstraction and the potential for salinization. Rising sea levels are further exacerbating the situation. ...

Optics & Photonics Apr 14, 2026

Copper blasted into a million-degree plasma strips away 22 electrons in a flash before atoms recover

When laser flashes hit matter, electrons are knocked off their orbits around the atomic nuclei. This can generate extremely hot plasmas composed of charged particles—ions and electrons. Researchers at HZDR have now observed ...

Astronomy Apr 13, 2026

See and hear galaxies evolve from the dawn of the universe

The most realistic picture yet of how galaxies formed and then evolved from the beginning of time has been revealed in a suite of new and unique audiovisual simulations. These data, accepted for publication in the Monthly ...

Astronomy Apr 14, 2026

Torsion balances set strongest direct limits yet on ultralight dark matter

Dark matter is believed to make up a large fraction of the matter in the universe, yet its true nature remains unknown. Most past experiments have focused on heavier dark matter candidates, while much lighter dark matter, ...

Ecology Apr 13, 2026

Beneath this cemetery, 5.5 million wild bees form a giant underground city vital to spring pollination

To save money, Rachel Fordyce parked her car for free at Ithaca's East Hill Plaza and walked through East Lawn Cemetery to her job as a technician in an entomology lab on Cornell's campus. One spring day in 2022, she walked ...

Optics & Photonics Apr 14, 2026

Quantum simulations tackle photon polarization flip, but today's hardware falls short

For the last 80 years, the theory of quantum electrodynamics (QED), which describes all electromagnetic interactions, has been a cornerstone of the standard model, withstanding the scrutiny of countless experiments and agreeing ...

Astrobiology Apr 14, 2026

Contaminants, including ink, detected in meteorites suggest sample preparation needs improving

The IBeA group of the EHU-University of the Basque Country is proposing new measures to safeguard the purity of extraterrestrial samples. Several contaminants, including traces of ink, originating in the preparation of subsamples, ...

Mathematics Apr 7, 2026

'Voorhees law' explains why the slower car often catches up

Many drivers will know the feeling: you pull ahead of the slower car you've been stuck behind and cruise the open road ahead at your own, faster speed. By the time you reach the next stop light, you're sure that you've left ...

Astronomy Apr 13, 2026

Self-interacting dark matter may solve three cosmic puzzles

A study led by UC Riverside physicist Hai-Bo Yu suggests that a new type of dark matter could explain three astrophysical puzzles across vastly different environments. Published in Physical Review Letters, the study proposes ...

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