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knappe
on Oct 22, 2017
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A newly discovered moon tunnel
You're not accounting for tidal forces. The same forces that create the tides on Earth also affect the moon. In this case via moon-quakes.
https://phys.org/news/2017-08-moon-tidal-stress-responsible-...
hyperpallium
on Oct 23, 2017
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But the moon is one-face, so tidal stress should be constant.
harperlee
on Oct 23, 2017
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parent
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What about the sun's? If the force is strong enough to make earth orbit, and moon-to-sun distance oscillates, plus seasonal behaviour, there must be quite some straining tides...
hyperpallium
on Oct 23, 2017
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root
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oh yeah, that makes sense. It's a tiny fraction of the moon-sun distance, but it would have some efrect. Is it a "tidal" force, though?
andai
on Oct 23, 2017
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The sun also creates the tides.
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https://phys.org/news/2017-08-moon-tidal-stress-responsible-...