Completing the circle

Today's the day that the space shuttle Endeavour lifts off and takes Barbara Morgan into orbit—thus completing the cycle that began 21 years ago of putting a teacher into space! I'm sure some may say "whoop-dee-do" to tonight's shuttle launch, but it does my heart good to see such spirit remain, particularly when we remember the tragedy that befall the space program in 1986 with the Challenger, and again in 2003 with the Columbia breakup.