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"content": "The physics seems dodgy. Venus' mass is around 5x10^24 kg and intuitively you'd need a lot more total mass than Venus for this trick, but the total mass of all the asteroids is just 0.05% of that of Venus, about 2.5x10^21 kg\n\nIndeed, I don't see that \"gravity assist\" works at all when the thing being moved is far greater than the body you are slingshotting off!\n\nSorry to be a wet blanket.",
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