American astronaut Sunita Williams told students at an Essex County school on Monday that astronauts quarantine before going into space to avoid getting sick on the International Space Station (ISS) -- and that she's not sure what would happen if someone threw a boomerang in space. Williams was answering questions live from the space station for students at Erie Migration District School in Kingsville, Ont. Over the course of the approximately 10-minute exchange, students asked Williams about her background and interest in space travel, the possibility of inhabiting other planets, the realities of life aboard the space station and what her scariest experiences have been in space. But Williams assured the students that astronauts are trained for such unexpected events. The exchange was facilitated by the Amateur Radio on the International Space Station (ARISS) program, which allows students from around the world to talk to astronauts aboard the ISS.