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 Photo of debris from area near left gear door released BY WILLIAM HARWOOD STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION Posted: February 27, 2003
The heat shield tiles on the outer surface of the wing debris appear almost lava like in appearance, certainly melted looking, indicating exposure to extreme heating. The left-wing landing gear wheel well is an area of intense interest because telemetry showed abnormal temperature increases and sensor failures in the well in the minutes before Columbia's destruction Feb. 1. Engineers theorize a breach in the left wing allowed hot gas to circulate in or around the wheel well as the shuttle encountered the region of maximum atmospheric heating. The breach presumably worsened until a structural failure occurred. Whether or not the debris shown in the photograph released this evening shows signs of such a breach is not yet known. But the tile damage is unusual in appearance, indicating exposure to extreme temperatures. Interestingly, the underside of the debris, sources say, shows no signs of such heating.
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