New measurements have resolved the proton radius puzzle, confirming a smaller subatomic value of 0.8406 femtometers.

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Scientists have caught fast-moving hydrogen atoms—the keys to countless biological and chemical reactions—in action. A team led by researchers at the Department of Energy's SLAC National Accelerator ...

In the middle of the last century, physicists found that protons can resonate, much like a ringing bell. Advances over the last three decades have led to 3D pictures of the proton and significant ...

The original version of this story appeared in Quanta Magazine. Physicists have begun to explore the proton as if it were a subatomic planet. Cutaway maps display newfound details of the particle’s ...

A collaboration of nuclear theorists has used supercomputers to predict the spatial distributions of charges, momentum, and other properties of 'up' and 'down' quarks within protons. The calculations ...