Christa McAuliffe Teacher in space, NASA, Tragedy, explosion, fatal, space shuttle, Reach for the stars, Teaching, education, schools, civilian in space, learning, books, 25th anniversary, space program, Challenger, honor, students, reading, history

Christa McAuliffe Teacher in space, NASA, Tragedy, explosion, fatal, space shuttle, Reach for the stars, Teaching, education, schools, civilian in space, learning, books, 25th anniversary, space program, Challenger, honor, students, reading, history