Hundreds gathered at the Kennedy Space Center to remember teacher Christa McAuliffe and others aboard the Space Shuttle Challenger on the 30th .
On the 30th anniversary of the Space Shuttle Challenger disaster, a remembrance of the crew through portions of President Ronald Reagans address to the .
Today marks the 30 year anniversary of the 1986 Challenger disaster. Seventy-three seconds after launch, the shuttle exploded. The tragedy unfolded on live .
Family, friends, and co-workers gathered at the Kennedy Space Center to remember those lost when the space shuttle Challenger blew apart just after liftoff 25 .
