re: No, she's good to go!
(CNN) --"The debris spotted floating away from space shuttle Discovery has been preliminarily identified as a thermal clip from the shuttle's brake system, NASA said Friday.
Also, lighting conditions tricked astronauts into thinking there was a "bump" along the edge of the shuttle's rudder, agency officials added.
It is not immediately clear why the thermal clip fell off the shuttle.
The clip -- one of three on the rudder speed brake -- protects the brake during launch and ascent.
The problem will not affect Saturday's planned landing, NASA spokesman Rob Navias said."