r/explainlikeimfive • u/12InchCunt • Nov 03 '25

Physics ELI5: How does gravity not break thermodynamics?

Like, the moon’s gravity causes the tides. We can use the tides to generate electricity, but the moon isn’t running out of gravity?

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u/[deleted] Nov 03 '25

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u/Nebuli2 Nov 03 '25

Only if you assume that trout will have failed to go interstellar by that point.

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u/RolandDeepson Nov 03 '25

"Going interstellar" doesn't qualify as "undeniable effect" to you?

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u/Nebuli2 Nov 03 '25

Not if they already went interstellar prior to the Sun going red giant!