The first of our periodic "OSIRIS-REx-Countdown to Launch” updates. On this episode Dante Lauretta, Professor of Planetary Science at the University of Arizona and Principal Investigator of the OSIRIS-REx asteroid sample return mission, discusses what's happening now to the spacecraft scheduled to launch in September, 2016. In this Episode: Dante Lauretta, PhD, Professor of Planetary Science at the University of Arizona and Principal Investigator of the OSIRIS-REx mission; Tim Swindle, Ph.D, Director and Department Head of the University of Arizona's Lunar and Planetary Laboratory