It's Not Perfect
Those who were hoping for a triumphant return to space...it ain't gonna happen yet:
NASA said Wednesday it is grounding future shuttle flights because foam debris that brought down Columbia is still a risk — and might have doomed Discovery if the big chunk of broken insulation had come off just a bit earlier and slammed into the spacecraft.
A large chunk of foam flew off Discovery's external fuel tank just two minutes after liftoff Tuesday morning. Shuttle managers do not believe it hit the shuttle, posing a threat to the seven astronauts when they return to Earth. But they plan a closer inspection of the spacecraft to be sure.
"You have to admit when you're wrong. We were wrong," said shuttle program manager Bill Parsons. "We need to do some work here, and so we're telling you right now, that the ... foam should not have come off. It came off. We've got to go do something about that."
The loss of a chunk of debris, a vexing problem NASA thought had been fixed, represents a tremendous setback to a space program that has spent 2 1/2 years and over $1 billion trying to make the 20-year-old shuttles safe to fly....
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