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/sci/ - Science & Math

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>> No.11544594 [View]
File: 167 KB, 1280x960, Metropolitan_Area_Outer_Underground_Discharge_Channel.jpg [View same] [iqdb] [saucenao] [google]
11544594

>>11544569
>You could build a 30km^3 open pressurized area in space if you needed to. Building the same underground would be impossible no matter what.

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