Physics

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Measurement, motion, energy, and the physical rules behind complex systems.

Black hole and surrounding galaxy in deep space

Seven-dimensional geometry may solve Stephen Hawking’s black hole paradox

A study in General Relativity and Gravitation proposes that a seven-dimensional form of spacetime geometry could leave black holes with tiny stable remnants, giving quantum information a place to survive after Hawking evaporation. The work, led by Richard Pinčák and colleagues, offers a theoretical route through one of the most famous conflicts between gravity and…

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Dramatic CGI rendering of a black hole with swirling accretion disk

Scientists detect a hidden gravitational-wave signal at a black hole’s edge

A study in Nature has reported observational evidence of a hidden gravitational-wave component in GW250114, the loudest binary black hole merger detected so far. By pulling out this faint signal from the merger’s aftermath, researchers have found a new way to probe the region just outside a newly formed black hole’s event horizon. The work…

Liquid water molecular structure

Researchers find evidence that liquid water switches between two hidden structures

A study in Nature Physics has found molecular-level evidence that liquid water can shift between two local structures, giving scientists a fresh clue to one of chemistry’s oldest puzzles. Using unsupervised deep learning and large molecular dynamics simulations, the research team identified patterns that support a long-debated idea called the two-state water model. The result…

NASA Cold Atom Lab ultracold bubbles

NASA’s upgraded space station lab is creating a strange fifth state of matter

NASA’s official Cold Atom Lab announcement points to one of the strangest laboratories ever flown in orbit. A compact quantum physics facility aboard the International Space Station is back in operation after an upgrade, giving researchers a sharper tool for studying matter at temperatures close to absolute zero. The facility is designed to create Bose-Einstein…