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Physics

Rethinking space and time could let us do away with dark matter

Most physicists believe that only a quantum theory of gravity can fully explain mysteries of the universe like dark matter, but now an idea called "post-quantum gravity" is demonstrating an alternative approach

By Alex Wilkins

13 March 2024

Post-quantum gravity could explain the rotation speed of galaxies, which is normally seen as evidence for dark matter

NASA, ESA, CSA

A potential new theory of gravity that ruffles the fabric of the universe, allowing space and time to vary erratically, could solve some of the largest mysteries in physics and do away with the need for dark matter, say its proponents. However, others say much more evidence is needed before this “post-quantum gravity” can be taken seriously.

Most cosmologists believe that a substance called dark matter makes…

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