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Trial #3: What will you do when space is as cheap and accessible as the Web is today?

CSats deorbited in vacant areas of oceans as impulse input to passive sonar imaging. Oceanographers get great maps, submarines lose stealth

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On the positive side, detailed acoustic propagation data leads to new insights on ocean dynamics - bathymetrics, thermoclines, currents, etc
by hjl
This really messes with strategic deterrence since now subs are vulnerable to first strike. But CSat deorbit is cheap WMD for all.
by hjl
Depending on how accurately you can drop a CSat, you can effectively "ping" a region and listen to the return signal through existing arrays
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A similar version of dropping CSats on land might yield useful seismic imaging. But these would all be surface impulse, not at depth.
by hjl

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If CSat components are dense enough to make it through reentry and hit the ground, there'd probably be a significant atmospheric boom too
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