Watch Tracy Caldwell Dyson, Astronaut, describe “the list” and how she discovered that she wanted to be an astronaut. She explains how you can be both a scholar and an athlete during her undergraduate studies at Cal State Fullerton as a chemistry major and track and field competitor. She compares the excitement of "launch" versus "landing" and describes the thrill of being your own “satellite” during her three space walks. Be sure to click on her special messages in American Sign and Russian.