From left to right, IU professor Rex Tayloe, University of Florida graduate student Rachel Prempeh and IU postdoctoral researcher Jeremy Lu stand in front of the COH-Ar-750 detector cryostat, the device containing and keeping the liquid argon at roughly -300 degrees Fahrenheit. Researchers hope to use the detector to test predictions of the Standard model of particle physics, the current best theory describing the universe. Courtesy Photo