The internal structure of a proton, with quarks, gluons, and quark spin shown. The nuclear force acts like a spring, with negligible force when unstretched but large, attractive forces when stretched ...

A new precision measurement of the proton's electric polarizability has confirmed an unexplained bump in the data. The proton's electric polarizability shows how susceptible the proton is to ...

Inside each proton or neutron there are three quarks bound by gluons. Until now, it has often been assumed that two of them form a "stable" pair known as a diquark. It seems, however, that it's the ...

LOS ALAMOS, N.M., February 24, 2021--A complex high-energy nuclear physics experiment, aiming to measure the contributions of antiquarks to the structure of the proton and neutron, has produced ...

Physics at the smallest scales is a challenge of observation: Particles are often fleeting, and the forces that govern their behavior are nearly imperceptible. But now, by exploiting decades-old data ...

The power of gravity is writ large across our visible universe. It can be seen in the lock step of moons as they circle planets; in wandering comets pulled off-course by massive stars; and in the ...

New data from the STAR experiment at the Relativistic Heavy Ion Collider (RHIC) add detail -- and complexity -- to an intriguing puzzle that scientists have been seeking to solve: how the building ...

The whole is equal to the sum of its constituent parts. That's how everything works, from galaxies to planets to cities to molecules to atoms. If you take all the components of any system and look at ...

Listen to the latest from the world of science, with Nick Petrić Howe and Shamini Bundell. Your browser does not support the audio element. Although studied for ...

Big things come in small packages. That's the latest finding of the Department of Energy's Thomas Jefferson National Accelerator Facility, which has discovered that inside every proton in every atom ...