At 10:45 p.m., Commander Mark Kelly and Mission Specialist Mike Fincke will speak with students from Mesa Verde Elementary School in Tucson, Ariz. Approximately 400 students in kindergarten through fifth grade will participate in the event and learn how the unique environment of space helps advance scientific discovery and exploration. In January, a shooting killed six people, including nine-year-old Christina Taylor-Green who attended the school, and gravely injured Kelly’s wife, Rep. Gabrielle Giffords.