I told my wife just before the Shuttle launch the other day, that I would not want to be one of the Astronauts on board. After seeing this on CNN today,

KENNEDY SPACE CENTER, Florida (CNN) -- There will be no more shuttle launches until NASA engineers determine the effect of debris that fell from the shuttle Discovery during blastoff Tuesday, said Bill Parsons, space shuttle program manager.

"We are treating it very seriously," he told reporters. "Are we losing sleep over it? Not yet."

He added, "We will continue to do the evaluation."

Discovery is due to return to Kennedy Space Center in Florida on August 7.

The date of the next planned mission had not been set.

Earlier Wednesday NASA lead flight director Paul Hill said that, based on engineers' "first-blush" analysis of falling debris, there was "no significant problem" with the orbiting shuttle.

Hill spoke to reporters after astronauts, using a robotic arm equipped with a camera and laser, spent "one hell of a day" poring over every inch of Discovery, looking for surface damage.

Although the mission had been scheduled to search for damage, concern about the issue was heightened after videotape from an array of cameras trained on Discovery during Tuesday's liftoff showed a piece of debris falling away from the underside of the orbiter.

NASA officials said the debris could have broken off from a tile near a door covering the nose landing gear. Space shuttles have shed tile during previous missions without consequences.

I am more convinced than ever that NASA needs to scrap the shuttle program and develop the next generation shuttle, one that does not rely on old technology like glue on tiles.