نتائج البحث عن "George H. W. Bush"
To revive public interest, NASA chooses teacher Christa McAuliffe to be the first civilian on the Shuttle. Issues with the solid rocket boosters linger.
المشاهدات:2
After several delays, the crew prepares for launch as engineers and NASA officials tensely discuss concerns about the O-rings and a cold weather launch.
المشاهدات:2
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