How many manned space missions are launched by NASA so far ?
a. 160
b. 162
c. 164
d. 166
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1
Answer:
B
Explanation:
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Answered by
2
NASA has successfully launched over 200 crewed flights. Two have ended in failure, causing the death of the entire crew: STS-51-L (the Challenger disaster) in 1986, and STS-107 (the Columbia disaster) in 2003. (Apollo 1 in 1967 lost three crew members but never launched.)
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