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Wondering why humans haven’t landed on Mars yet? Maybe it’s because it’s a tiny target that’s really, really far away http://t.co/l9dxWL1NMl


197
197 points

Wondering why humans haven’t landed on Mars yet? Maybe it’s because it’s a tiny target that’s really, really far away http://t.co/l9dxWL1NMl


Capt. Xerox