So assume someone wants to terraform Venus. And for extra points the decide to get her a moon too. So, how could you get Ganymede to Venus with as little effort as possible but also as fast as it can happen?
Now I know what y'all think, why not take something like Mercury or Ceres? And the answer is, because it doesn't sound as cool.
In principle, getting Ganymede to Venus shouldn't be totally impossible.
If we look at their Orbits, Venus is going around at 34.8 km/s. Where as Ganymede rolls around at 13.2 km/s as it travels with Jupiter.
The idea is that we really only need to kick Ganymede out of Jupiter's Orbit. This can be done by slowing it down to around 6 km/s. Then it will fall down and intersect with Venus. It will be pretty much impossible to just let it be captured by Venus. It is falling way faster so a few rotations around the sun will have to happen. Each one bringing it closer to Venus. Maybe some Gravity assists later it will just sort of stay in an Orbit around Venus ?
I guess if you ware patient you could create a series of epic gravity assists that will bring Ganymede into the Perfect Orbit. It will just take like forever. I was hoping to do it in about 5 Years or so.
So yeah, how?