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It might be marginally more feasible to build an enormous space tether (https://www-istp.gsfc.nasa.gov/Education/wtether.html). By dragging it through Earth's magnetic field (which extends out past the moon on the "downstream" side of the solar wind), you could: 1) generate large quantities of electricity, which would be extracted by orbital energy 2) use that electricity in some useful way to further slow momentum (like powering some of the ion engines they talk about in the article).

Anyone with a stronger physics background want to do the math and tell me why this won't work (or at least be marginally better than the proposal in the article?)



The opposite would happen. Because the Earth rotates once a day, and the moon once a month, the tether would have the effect of speeding up the moon!

Which will cause its orbit to move farther away.

That's what the tides are: They consume the energy difference between the two speeds, and they are what is causing the moon to move.




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