The milestones, heartbreaks, and discoveries that shaped NASA's 30-year shuttle program. NASA's storied space shuttle program experienced extraordinary triumphs and heartbreaking tragedies during ...

Corrections & Clarifications: An earlier version of this story misstated the date of the Space Shuttle Columbia disaster ... Nancy Reagan − "Oh my God, no!" − captured the horror of the ...

For millions, it was an event that would be seared into their memories for the rest of their lives – on par with the Kennedy assassination and 9/11.