QuoteIn a study published in Physical Review Letters, physicists have demonstrated that black holes satisfy the third law of thermodynamics, which states that entropy remains positive and vanishes at extremely low temperatures, just like ordinary quantum systems. The finding provides strong evidence that black holes possess isolated ground states, a hallmark of quantum mechanical behavior.

Prior calculations showed that black hole entropy might become negative at low temperatures, a result that appeared physically puzzling. In this work, researchers addressed the paradox by incorporating wormhole effects in the two-dimensional Jackiw-Teitelboim (JT) gravity model.

In quantum systems, entropy measures the number of possible microscopic configurations. If a system has an isolated ground state—a unique lowest energy configuration—its entropy should vanish as temperature approaches absolute zero.

https://phys.org/news/2025-11-probing-quantum-nature-black-holes.html

QuoteHydrodynamics theory offers quantum physicists with an alternative route for simulating the interactions between particles in large systems. If a system is chaotic, in fact, researchers can assume that the particles will interact in ways that will ensure a state of local thermal equilibrium.

"Quantum systems are fundamentally different from their classical counterparts because their constituent particles can exhibit quantum phenomena like entanglement, which defy everyday intuition," said Wienand. "They are also much harder to calculate, so being able to describe them using FHD could help us understand such systems better and make predictions about them."

https://phys.org/news/2024-09-team-emergence-fluctuating-hydrodynamics-chaotic.html

QuoteOn the other hand, studying the dynamics of individual microscopic degrees of freedom comprehensively becomes too cumbersome even when considering systems of a moderate number of particles. To describe the interface between these opposite ends of the scale, stochastic field theories are commonly used to characterize the dynamics of complex systems and the effect of the microscopic fluctuations.

https://phys.org/news/2025-11-randomness.html

QuoteThe Murchison meteorite, which crashed into Australia in 1969, is older than our solar system at 7 billion years. Recent analysis revealed something extraordinary, that all five nucleobases that form DNA and RNA (adenine, guanine, thymine, cytosine, and uracil) were present in this ancient stone. These molecules, confirmed as extraterrestrial in origin, fundamentally challenge the assumption that life's ingredients formed exclusively on Earth.

Radio telescopes have detected more than 100 organic molecules in interstellar dust clouds, including amino acids and nucleic acid components. These findings strengthen the panspermia hypothesis, the idea that life's building blocks are distributed throughout space, potentially seeding planets across the galaxy.

https://phys.org/news/2025-11-decades-aliens.html

QuoteIn the animal kingdom, penises can be spiked, split, corkscrewed — even detachable. They're one of the most diverse structures in biology. The human penis is so uniform, it's an anatomical outlier.

https://phys.org/news/2025-11-world-animal-penises-reveal-humans.html

QuoteIn one of the episodes featuring Karan Johar and Janhvi Kapoor, the ladies and even the filmmaker said how physical infidelity was not cheating, leading to social media backlash and debate. The ladies have now broken their silence on the same.

https://www.firstpost.com/entertainment/kajol-and-twinkle-khanna-on-backlash-over-their-physical-infidelity-is-not-cheating-remark-please-dont-follow-any-of-our-13954672.html

Quote"Spies have been known to work code messages into knitting, embroidery, hooked rugs, etc," according to the 1942 book A Guide to Codes and Signals. During wartime, where there were knitters, there were often spies; a pair of eyes, watching between the click of two needles.

https://www.atlasobscura.com/articles/knitting-spies-wwi-wwii