Theory of relativity

Space-time network. Illustration: depositphotos.com

Tiny black holes may form from space-time 'crystals'

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Researchers have presented a mathematical formula for a theoretical process in which space-time organizes itself into a cyclical pattern. A small addition of energy could transform this unstable state into a tiny black hole.
Physicists are investigating whether time itself can behave according to the rules of quantum mechanics, and not just serve as a fixed backdrop for events. Illustration: depositphotos.com

Physicists propose an experiment in which time itself would exhibit quantum behavior

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A new study proposes using ultra-precise atomic clocks to test whether the flow of time can be found in a quantum superposition. The researchers hope to measure for the first time a single clock “ticks” at multiple rates simultaneously.
Black hole. Illustration: depositphotos.com

Light on the Black Hole: How It Connects Relativity, Quantum, and Thermodynamics

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Avshalom Elitzur explains why the black hole is not only an extreme cosmic object, but also a profound hint at a new physics that will unify relativity, quantum theory, and thermodynamics.
An artist's impression of the accretion disk around a black hole, where the inner region of the disk wobbles. In this context, wobble refers to the orbit of material around the black hole changing direction around the central body. Credit: NASA

Astronomers confirm Einstein's theory: Black hole distorts space-time

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First direct observation of "frame dragging" phenomenon confirms century-old prediction from general relativity
Portrait photograph of Emanuel Lasker in his old age: silver print, black and white, 12X16.5. According to the stamp on the back of the photograph, it was produced by the German news agency Transocean, probably in the early 1920s. From Wikimedia

Emanuel Lasker: The Genius on the Chessboard and Among the Ideas of the Period

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Space-time. Illustration: depositphotos.com

Does space-time really exist?

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Is time something that flows—or just an illusion? Examining space-time as a fixed or dynamic fabric reveals deeper questions about existence, change, and the true nature of reality.
Asher Yahalom presents a relativistic nano-engine at the Aerospace Technology Conference 2025, A Coruna University, India

Groundbreaking Relativistic Engines: From Theory to Practical Propulsion

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Ariel University Researchers Unveil Distributed, Quantum Mechanisms for Propulsion Without Rocket Thrust
A physicist researching quantum theory in Stalin's USSR. "Non-partisan theory." The image was prepared by DALEE in the absence of an original image of Semyon Semkovsky.

The clash between the theory of relativity and materialist dialectics – the story of the life and work of Semyon Semkovsky

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In 1931, the Central Committee of the Communist Party issued a decree banning philosophy and science that were not "party." The theory of relativity was among them. Semyon Bronstein-Semkovsky defended the theory of relativity and paid for it with his life.
Leopold Infeld in a photograph from 1938. Public domain photo from Wikimedia

In Search of the Homeland: Leopold Infeld

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Leopold Infeld's life journey: from the Krakow ghetto through collaboration with Einstein to protests against anti-Semitism and censorship in Poland
Finally the DOM experiment in the South Pole Telescope detector system is starting to give results. Credit: Mark Krasberg, IceCube/NSF

Bending reality: Einstein meets quantum mechanics in Antarctic ice

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Researchers examine the interface between these two theories, using ultra-high-energy neutrinos detected by a particle detector placed deep inside the Antarctic ice sheet at the South Pole

Another step towards quantum gravity

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Physicist Hikida from the University of Tokyo and his colleagues developed the dual model for Einstein's theory of gravity in three-dimensional de Sitter space. This is a significant step towards a model that will faithfully describe nature, that is, the physics of

Quantum entanglement between events

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What is the matrix we live in? Image: pixabay.

Einstein - the man who started to take us out of the matrix (part 3): there are gravitational waves!

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Black hole simulation. Quantum entanglement and black holes, two seemingly unrelated phenomena, may lead physicists to the long awaited unification: the unification of general relativity and quantum mechanics. Image: Ute Kraus / Wikimedia.

Black holes, wormholes and the secrets of quantum space-time

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A summary of the history of time travel

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A graphic illustration of the hexacarbonyl cyborgium molecule on detectors coated with silicon dioxide. [Courtesy of Alexander Yakushev (GSI) / Christoph E. Düllmann (JGU)]

For the first time ever, a chemical bond between a superheavy element and a carbon atom was demonstrated

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gravity. Illustration: Yale University website

Einstein - the man who began to take us out of the matrix (part two)

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Computer simulation of material ejected during the fusion process of neutron stars (by Stefan Rosweg). The ejected material reaches great distances and creates the radio signal there.

A tool has been developed that will make it possible to discover neutron star mergers that are good candidates for studying gravitational waves

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Guess who it is

Happy birthday Einstein: Is it possible to sense the lengthening of time from Einstein's theory of relativity?

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A four-legged robot learned to change its movement style to traverse a forest and jump over obstacles

Two photons from space give confirmation to Einstein's relativity

A four-legged robot learned to change its movement style to traverse a forest and jump over obstacles

Will a quantum model help to improve Einstein's theory of general relativity

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A four-legged robot learned to change its movement style to traverse a forest and jump over obstacles

The soon-to-be-launched Gravity Probe B satellite may confirm general relativity

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