Bob Ebeling spent a third of his life consumed with guilt about the explosion of the space shuttle Challenger. But at the end of his life, his family says, he was finally able to find peace.

“It was as if he got permission from the world,” says his daughter Leslie Ebeling Serna. “He was able to let that part of his life go.”

Ebeling died Monday at age 89 at in Brigham City, Utah, after a long illness, according to his daughter Kathy Ebeling.

Hundreds of NPR readers and listeners helped Ebeling overcome persistent guilt in the weeks before his death.

Source: Texas Public Radio