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Almost none, to be honest, using the method you propose. SLS can carry approximately 6 tons to Jupiter using a direct route (Based on Europa Clipper). To then land, cut, and re-launch would lead to a very small amount of ice actually carried to Venus. Not sure of the amount exactly, because it depends on the exact way one makes the spacecraft, but I'm going ...


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Let's compare it to a mission that did almost exactly that: The OSIRIS-REx asteroid sampling mission. OSIRIS-REx flew from Earth to a destination closer than any of the possible icy moons or asteroids, but with luck we might locate a suitable ice-bearing target that is as easy to reach. Definitely there are none that are easier, and most are much further ...


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I would like to counter the naysayers. As long as we're dreaming of terraforming, this seems as good an idea as any. First, I think there's a bit too much hand-waving along the lines of, "Well, once we could do that, we might as well... do... something... else??" That begs the question, "What else?" Two counter-suggestions, namely, using ...


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