Gravitation as a research area investigates the fundamental interaction responsible for the attraction between masses, spanning classical, relativistic, and quantum regimes. It encompasses the study of Newtonian gravity for weak-field, low-velocity systems, general relativity for strong-field and cosmological phenomena, and experimental and observational tests across scales from laboratory to astrophysical and cosmological. The field also includes gravitational wave physics, black hole and neutron star dynamics, precision tests of the equivalence principle, alternative and modified gravity theories, and efforts toward quantum gravity, such as loop quantum gravity, string-inspired models, and semiclassical approaches, with strong connections to cosmology and high-energy theory.
Everything around us, from atoms and molecules to planets and galaxies, is governed by two extraordinarily successful theories of physics: quantum mechanics and gravity. Quantum mechanics explains the behavior of the microscopic ...
General Physics
Jul 2, 2026
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Hawking radiation is a form of radiation emitted by black holes, as theoretically predicted by Stephen Hawking. It suggests that black holes do not merely swallow matter—as had previously been assumed—but also emit very faint ...
General Physics
Jul 2, 2026
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Gravity, the force that attracts objects toward each other, is currently framed by Albert Einstein's theory of general relativity. This framework describes gravity as the curvature of spacetime, the invisible four-dimensional ...
Assistant Professor Haocun Yu is something of a scientific diplomat. In a recent Physical Review Letters publication, she and her colleagues show how a tabletop experiment can bring together two bedrock physics theories that ...
General Physics
Jun 8, 2026
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Black holes, regions in space where gravity is so strong that nothing can escape, have been widely studied over the past decades, due to their unique and intriguing properties. Einstein's theory of general relativity predicts ...
A new Physical Review Letters study places constraints on the ER = EPR conjecture, showing that under the authors' assumptions, the conjecture would imply possible alterations to the hyperfine structure and effective charge ...
A team from Vienna and Frankfurt has found a formula describing a strange phenomenon: Space and time can form a kind of "crystal" that may turn into a black hole. The results are described in Physical Review Letters.
General Physics
May 21, 2026
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The largest-ever survey of physicists from around the world—released today—shows a distinct lack of consensus across many of physics's most important questions, from the nature of black holes and dark matter, to the still-incomplete ...
General Physics
May 12, 2026
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The concept of spacetime, first described in Einstein's theory of general relativity, has since been widely studied by many physicists worldwide. Spacetime is described mathematically as a four-dimensional (4D) continuum ...
A study by University of Wollongong (UOW) physicist Dr. Enbang Li has demonstrated that gravity can subtly influence the behavior of light, a breakthrough that could underpin future technologies for monitoring groundwater, ...
General Physics
Apr 24, 2026
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