What was the question for this implicit rationale, and corresponding answer?
Apollo 13 was a failed Moon landing in which the crew had faulty oxygen resources. All of the Apollo 13 crew returned safely to earth. The Challenger was a space shuttle that malfunctioned, killing all seven passengers. The Space Shuttle Columbia disaster had seven casualties.
 The answer: yes
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The question: Were deaths from Apollo 13 mission eclipsed by other space missions?
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