 LXeGRIT used a liquid xenon time projection chamber as a Compton telescope for imaging cosmic sources in the 0.15 to 10 MeV energy band.A total of about 36 hours of data were gathered from two long-duration flights in 1999 and 2000, at an average altitude of 39 km.Since 2001, Aprile's research focus shifted to particle astrophysics, specifically to direct detection of dark matter with liquid xenon.