JOHNSON SPACE CENTER (AP) - NASA engineers are trying to determine whether foam insulation that broke off the fuel tank during liftoff has damaged the space shuttle Endeavour.
Crew members thoroughly inspected the shuttle yesterday.
Officials say there's been no critical damage.
Endeavour is expected to come within 600 feet of the international space station before docking, and do a giant backflip so station crew members can zoom in for pictures of the craft. The photos will be sent to Houston for analysis.
The most worrisome foam fragment struck the shuttle nearly a minute after liftoff. It resulted in a spray or discoloration on the right wing.