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But as long as we know that the sublimation of ice causes the jets...
Not read any papers on comets for the past few decades, have you? What are those jets composed of? Volatiles and dust. And ice, on some occasions. That isn't a guess, that is observation.
And what are those jets conspicuously lacking? Electric woo!! And yet you still believe this heap of crap that Thornhill conned you with. Hint; whatever it is, it is not science.