Passage: Space shuttle Discovery and ISS astronauts on Wednesday only managed to fold the stubborn array half-way by remote control, and NASA engineers on Friday tried to determine why it remained stuck after repeated attempts at activation. At one point, NASA engineers in Houston asked German astronaut Thomas Reiter to exercise vigorously for 30 seconds on the ISS's training machine, hoping his vibrations would cause the panels of the stubborn array to fold all the way.
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