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redcolts854 karma2014-12-02 22:06:25 UTC
A journey to Mars would surely be the longest (in terms of both distance and time) manned space expedition in human history. How long do you estimate the outbound and return trips will take?
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redcolts854 karma
A journey to Mars would surely be the longest (in terms of both distance and time) manned space expedition in human history. How long do you estimate the outbound and return trips will take?
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