Inside the European Synchrotron Radiation Facility's 844-meter-diameter storage ring, electrons traveling at almost the speed of light produce some of the brightest X-ray beams in the world. These X-rays can reveal the position and motions of atoms in all kinds of matter. Seven of the facility's 44 beamlines are dedicated to structural biology research and run under the auspices of an EMBL-ESRF partnership known as the Joint Structural Biology Group (JSBG).