关于这张图
JSC2005-E-31523 (2 August 2005) --- Astronaut David A. Wolf points to a simulated piece of protruding fiber on a set-up of thermal tiles to demonstrate for a press conference audience possible techniques to extract the gap filler material on the underside of the Space Shuttle Discovery. The STS-114 crew will conduct a spacewalk on August 3 to remove two such pieces.
