Abstract
At RHIC (the Relativistic Heavy Ion Collider) two atomic nuclei move toward each other at near the speed of light. The atomic nuclei that have been collided include gold, deuterium, copper, and free protons. Creighton is a member of the collaboration that works on a detector called STAR, the Solenoidal Tracker At RHIC. The STAR detector is used to detect Ultra Peripheral Collisions, (UPCs). These collisions occur when the nuclei physically miss but still interact wim each other electromagnetically. This electromagnetic interaction of atomic nuclei leaves both nuclei intact but can give off other particles. The presentation will explain the STAR detector and the physics of UPCs focusing on the production of rho mesons.