Word: sunshield
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Once safely in a 219-mile-high orbit, Discovery's crew members set about inspecting the condition of its cargo, three communications satellites, and promptly ran into trouble. As they were attempting to temporarily open the sunshield on AUSSAT, an Australian satellite, the shield snagged on AUSSAT's antenna and stuck. Although the astronauts managed to nudge the sunshield completely open with Discovery's 50-ft. robot arm, NASA decided it was too risky to close the screen again; if it could not be reopened, the satellite would be useless in orbit...
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