O-ring erosion on Discovery would have disastrous effects a year later It has been 40 years since NASA launched the first ...

The Challenger disaster, which occurred on January 28, 1986, remains one of the most heartbreaking events in space exploration. The tragedy was caused by a failure in the shuttle’s solid rocket ...

It's been 39 years since the Challenger space shuttle, carrying seven people, took off from Florida's Kennedy Space Center, exploding in mere minutes.

The anniversary of the Challenger disaster marks a cold reminder of risk and management failure along with the role weather played in the deadly flight.

Today marks 39 years since the tragic Space Shuttle Challenger disaster, honoring the brave pioneers who lost their lives in space.

This marks 35 years since the Challenger disaster ... failed during liftoff. The disaster was caused by an O-ring seal that failed to work properly during the unusually cold conditions.

NASA recently paid tribute to the Challenger crew and other fallen astronauts during its annual Day of Remembrance.

Within days, NASA concluded two rubber O-rings in Challenger’s right solid ... Seventeen years after the Challenger disaster, another shuttle and its crew were lost in the skies above America ...

Today marks the 39th anniversary of the Space Shuttle Challenger disaster (Mission STS-51-L), when the shuttle's seven astronauts were killed by an explosion.

This hot-headed engineer makes a desperate race against the clock to call off the billion dollar multi-delayed Challenger launch, convinced the O-ring seals will fail and kill everyone on board.

The world was shocked and saddened 39 years ago after the Space Shuttle Challenger tragedy. The crewed shuttle mission for NASA ended moments after the launch with a terrible mid-air explosion on Jan.

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