We watched as the space shuttle Challenger lifted off the paunch pad on what seemed like a perfect launch. As it cleared that launch tower, I challenged my dream one final time.

• 我们看到“挑战者”航天飞机自发射台发射升空，发射似乎完美无误。航天飞机离开发射塔时，我最后一次向梦想发难：