This free structured look at the 1986 Challenger disaster places the teacher who died with six others as they hurtled into space at the center of an exploration of our need to reach beyond ourselves and dare the universe. <i>Defying Gravity</i> artfully interweaves the past with the present and the lives of participants and bystanders, drawing parallels among painter Claude Monet's artistic quest, the zest of the teacher selected to the first civilian astronaut, the perspectives of her grieving