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A new measurement appears to have eliminated an anomaly that had captivated physicists for nearly a decade.
While studying materials made from DNA-coated nanoparticles, researchers found a new form of this matter: lattices in which smaller particles roam like electrons in metallic bonds.
At stake are fundamental ideas about how black holes form — and a six-way bet.
The theoretical particle physicist Ann Nelson, who died on August 4 at age 61, was a font of brilliant ideas and a champion of ending discrimination in the field.
New measurements could upend the standard theory of the cosmos that has reigned since the discovery of dark energy 21 years ago.