A tiny discrepancy in particle physics has loomed for decades as an exciting possible crack in one of science's most ...

A decade-long effort to measure one of physics’ most fundamental constants culminates in a moment of uncertainty and revelation.

Its value describes the strength of the gravitational force acting on two masses separated by a given distance—or if you want to be relativistic about it, the amount a given mass curves space-time.

A quantum spin liquid is a phase of matter in which the magnetic moments in a material do not align or freeze, even at ...