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Researchers have measured the gravitational pull exhibited by the smallest mass yet, a breakthrough that could lead to a quantum theory of gravity at last.
A bundle of magnets and glass had a slight but detectable gravitational pull, pushing scientists closer to the boundary between classical and quantum physics.
Quantum gravity has long baffled scientists. Now, a breakthrough discovery could change physics forever - and answer our biggest questions.
Positronium has the potential to revolutionise physics but the elusive substance had been too hot to handle.
Positronium has the potential to revolutionise physics but the elusive substance had been too hot to handle.