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A quarter-century since shuttle was lost
Seventy-three seconds. That's how long NASA's space shuttle Challenger was in the air before an O-ring failure turned a routine mission into space into a tragedy. Twenty-five years later, the memory of the Challenger disaster is still strong.
A first-hand recollection
Reporter recalls witnessing Challenger explosion
I just remember seeing the cloud of smoke and what looked like fireworks ...
-- CNN reporter John Zarrella
The Challenger disaster's teachable moment
CNN uncut: 1986 Challenger disaster
Where were you?
Share your memories with iReport
Photos: The crew, mission, and investigation
Inside CNN when Challenger exploded
CNN Uncut: 1986 Challenger disaster
Challenger disaster remembered
1986: NASA Challenger news conference
1986: Spectators watch Challenger explode
Did you see the Challenger explode live on TV?