Join WBAA, AM920, public radio from Purdue, for a one-hour special public affairs presentation "A Conversation with Our Astronauts," at 9 a.m. and 7 p.m. Tuesday (April 22) on AM 920 and www.wbaa.org. The highly anticipated forum was recorded April 12th at Elliott Hall of music and hosted by Purdue President Mitch Daniels.