it is with deep, heartfelt sorrow. I address you here this afternoon at 11:40 a.m. This morning Space program experienced a national tragedy with the explosion of the space shuttle Challenger.

Tuesday marks the 39th anniversary of the Space Shuttle Challenger tragedy.The shuttle exploded 73 seconds after takeoff on Jan. 28, 1986.New Hampshire teacher Christa McAuliffe was one of the seven ...

For millions of Americans, 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. On that chilly January day in 1986, ...

Cold weather weakened the Challenger's O-rings, causing a seal failure. Hot gases escaped due to the O-ring failure, leading to an explosion. NASA's decision to launch followed established procedures, ...

WHITEHALL, Mich. — The Space Shuttle Challenger explosion was one of those moments in history that you will always remember where you were when they happened. Terry Fett, who now lives in Whitehall, ...

The Challenger disaster, a tragic day in space exploration history, took place on January 28, 1986. Just 73 seconds after launch, the Space Shuttle Challenger exploded, leading to the loss of seven ...

The explosion of the Space Shuttle Challenger in 1986 that killed high school teacher Christa McAuliffe and six other crew members was one of those tragedies where everyone seems to remember where ...

Author Adam Higginbotham joins John Williams to discuss his book, ‘Challenger: A True Story of Heroism and Disaster on the Edge of Space.’ Adam talks about what makes him interested in these types of ...

The crewed shuttle mission for NASA ended moments after the launch with a terrible mid-air explosion on Jan. 28, 1986. The blast killed all seven crew members aboard Challenger, including teacher ...

Corrections & Clarifications: An earlier version of this story misstated the date of the Space Shuttle Columbia disaster. It occurred Feb. 1, 2003. For millions of Americans, it was an event that ...