Re: Actually it is the main focus...
as a starting point for the investigation. Heard on the news while driving home that NASA has determined that the piece from the ET that hit the left wing of Columbia was 22"X16"x6" and weighed 2.5 pounds. After the piece hit the wing it's (the piece) energy turned to vapor, which is why some first thought it could be ice that hit the wing.
It's way to early in the investigation and NASA is revealing lots of data to the public. Far more than I expected (this early) anyway,
SteveS