Crikey, i never said Jupiter's gravitaional field wasn't a factor. But it's the orbital velocity that gives the spacecraft the extra push. Of course Jupiter's gravitational field is necessary to pull the spacecraft along in the first place, as the Wikipedia article I linked to clearly states. Can't people read between the lines or do I have to spell out even the bleedin' obvious?
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Crikey, i never said Jupiter's gravitaional field wasn't a factor. But it's the orbital velocity that gives the spacecraft the extra push. Of course Jupiter's gravitational field is necessary to pull the spacecraft along in the first place, as the Wikipedia article I linked to clearly states. Can't people read between the lines or do I have to spell out even the bleedin' obvious?
And as we all know, it is Jupiters orbital velocity that gives the spacecraft its speed boost, not Jupiter's gravitational field. See: here.