According to research published in Physical Review D on July 16, 2026, Queen Mary University of London mathematician Professor Ginestra Bianconi has examined the thermodynamics of spacetime using the Gravity from Entropy (GfE) quantum gravity theory, revealing how total cosmic entropy increases while local entropy per unit volume declines as the universe expands. Reconciling Thermodynamics … Read more
According to general relativity framework observations, Albert Einstein introduced a cosmological constant in 1917 to counterbalance gravity and preserve a static universe model, a parameter later revived by astronomers in 1998 to explain the accelerating expansion of the cosmos driven by dark energy. General relativity originally described a dynamic cosmos expanding or contracting, yet prevailing … Read more
The observable universe is significantly larger than its age in light-years because space has continuously expanded while light travels toward Earth. While the universe is approximately 13.77 billion years old, the distance to the edge of the observable universe is roughly 45 billion light-years. This discrepancy exists because the expansion of space itself carries distant … Read more
When two black holes collide, they do not simply vanish into silence; they ring like a struck bell, shedding energy through gravitational waves in a process known as “ringdown.” According to a review, scientists are now using these fading vibrations to perform “black hole spectroscopy,” turning the aftermath of cosmic mergers into a precision laboratory … Read more
A decades-old mystery in particle physics has reached a turning point: a new study published in Physical Review Letters effectively rules out dark matter as the source of a long-standing “seasonal” signal. By combining data from the ANAIS-112 and COSINE-100 experiments, researchers have demonstrated that the annual modulation previously reported by the DAMA/NaI experiment does … Read more
New research suggests dark matter may not have required a cold, calm start to facilitate the formation of the universe. A study indicates that dark matter particles could have originated at near-light speeds—behaving as “hot” matter—before cooling sufficiently to seed the cosmic structures, such as galaxies, that we observe today. This finding challenges the four-decade-old … Read more
A new theoretical model suggests that collapsing massive stars may form “gravastars”—ultra-compact objects containing a mini-universe—rather than black holes. Published in Physical Review D by Daniel Jampolski and Professor Luciano Rezzolla of Goethe University Frankfurt, the research provides a dynamic solution to Albert Einstein’s equations of General Relativity, proposing that dark energy within a core … Read more
Researchers have successfully used transfer learning to reduce the computational cost of simulating complex cosmological models by more than ten times, according to a study published in the Journal of Statistical Mechanics: Theory and Experiment. By pretraining neural networks on standard ΛCDM models before introducing complex physics like massive neutrinos, scientists can accelerate the search … Read more
Researchers at the Institute of Theoretical Physics at Leibniz University Hannover (LUH) have developed a new detector-based framework to accurately measure gravitational waves within an evolving, expanding universe. By defining the signal through the physical response of test masses rather than abstract mathematical coordinates, this method allows scientists to distinguish genuine cosmic waves from the … Read more
Theoretical physicists have developed a new model demonstrating that collapsing stars could potentially form “gravastars” instead of black holes, offering a solution to the mathematical paradoxes of singularities. According to research published in Physical Review D by Daniel Jampolski and Luciano Rezzolla of Goethe University Frankfurt, a star’s collapse can be halted by an expanding … Read more