[Valin]

I'm thinking some tiles fell off.
A guy on cbs was just saying that on an earlier flight some debrie(sp) from the external fuel tanks hit the leading edges of the left wing. something like this could cause severe stress on that wing.

[valleygal]

I thought they said on Fox that this problem was on take off two weeks ago...some insulation material came off but NASA said that were good to go.

Adding my prayers. This is awful. Challenger's anniversary was just 4 days ago.