This sucker is about 70 kilometers long:

Get the details here, from NASA
Giant Sperm Found On Mars
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Comments
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Such nice big healthy sperm. What can we deduce from this? It’s very likely that the species has wide sexual dimorphism. So, we should be watching for some evidence of very small females.
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Wow! That’s a mighty great depression there. Must have been a dramatic collapse. Perhaps due to the failure of rulles.
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Mars is a giant ovum?
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No, it’s a giant golf club, like a giant 3 wood or something (I know squat about golf). That’s clearly hitting a ball off a tee there.
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Further evidence for “Big Man”, the Gargantuan Paul-Bunyan-oid legend in Kim Stanley Robinson’s Red/Green/Blue Mars trilogy.
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Just one sperm? No wonder the Martians went extinct with such a low sperm count.




