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A comment on Previous Evidence of Water on Mars Now Identified as Grainflows. Parent comment

Re:Previous Evidence of Water on Mars Now Identified as Grai... by spraak on Tuesday November 21, 2017 @10:12AM (#15748324)
A long hose?
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Re:Previous Evidence of Water on Mars Now Identified as Grai... by kijin on Tuesday November 21, 2017 @11:01AM (#15748739)
A portal from Earth, maybe.

https://what-if.xkcd.com/54/

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