A research team led by Prof. Pan Feng from the School of Advanced Materials, Peking University Shenzhen Graduate School has ...

Many heavy atoms form from a supernova explosion, the remnants of which are shown in this image. NASA/ESA/Hubble Heritage ...

An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter ...

If you add and subtract those fractions, you get the +1 charge of a proton. Valence quarks get lots of attention. But they’re about 1% of what’s inside a proton.