Earlier on Thursday, astronauts Janice Voss and Joe Allen had lunch with math and physics students and faculty. In that presentation, Voss talked about the physics behind the mission of her fifth Space Shuttle flight. That mission used three-dimensional mapping technology to map more than 47 million square miles of the earth's surface. Wabash students got to see some of the actual training materials used by Voss as she prepared for the flight. The visit by two of Indiana's NASA astronauts was funded by a gift from Lilly Endowment Inc. as part of the Experience Indiana Program.