CPEPphysics.org

This image shows a typical atomic nucleus. Each nucleus contains three quarks which are held together by the strong force created by gluons.

This waveform (GW150914) is that of the first observation of gravitational waves on 2015-09-14. It was also the first observation of a binary black hole merger and demonstrates the existence of binary stellar-mass black hole systems.

Contemporary Physics Education Project (CPEP) History of the Universe map