The search for quantum gravity has gone on for 100 years, but it is not the only unification challenge in physics. Many of us ...

Extreme stars may possess mountains similar to those found on moons in our solar system, potentially creating detectable ...

Black holes are influenced by quantum mechanics to some extent, but such influence is normally ignored by physicists. For ...

Emergent gravity is a bold idea. It claims that the force of gravity is a mere illusion, more akin to friction or heat—a ...

To resolve the black hole, they used the Event Horizon Telescope, a global radio telescope array with an effective aperture ...

For centuries, gravity has been one of the most captivating and puzzling forces in the universe. Thanks to the groundbreaking ...

A galaxy lurking in the far reaches of the Universe, a mere 600 million years after the Big Bang, is giving us our best ...

Albert Einstein’s theory of gravity, general relativity, is famously incomplete. As proven by physics Nobel laureate Roger ...

Avi Loeb explores how experimental quantum gravity may one day help to connect the dots between quantum mechanics and general ...

A new image by the Chandra X-ray Observatory reveals an unidentified celestial object, dubbed C4, getting blasted by a jet of ...

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Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.