NASA Administrator Charles Bolden and Secretary of Education Arne Duncan hosted Washington area middle and high school students Thursday for a live discussion with Expedition 21 astronauts aboard the International Space Station. The event was part of the 10th annual celebration of International Education Week, so the students asked the crew members questions in English, French, German and Russian. The week highlights international education and international exchange. This year’s theme is "Creating a Vision for a Better Future." NASA's mission is to pioneer the future in space exploration, scientific discovery and aeronautics r