Tragedy forced NASA to evolve. After Columbia burned up on reentry, engineers asked if rescue was possible - while years earlier, Challenger's explosion sparked plans for safer unmanned shuttles.

NASA was created to run America's race into space after the Soviet Union launched the orbiting satellite Sputnik in 1958. Twenty-five years ago, the Challenger spacecraft exploded 73 seconds after ...

A flag that survived the Challenger space shuttle explosion in 1986 will be permanently displayed at the Challenger Learning Center in Colorado Springs, offering visitors a tangible connection to one ...

Every American who lived through the '80s remembers the Challenger explosion. But what happened to cause the famous national tragedy? How could such a catastrophe happen when NASA so meticulously ...

HOUSTON -- It has been three decades since America witnessed that disaster after liftoff in a moment that should have been historic for a different reason.

As the space shuttle Challenger roared away from Earth 30 years ago Thursday, only CNN was covering it live for a national audience. For 73 seconds, viewers saw only the orbiter and its rocket ...