Additionally the current theory is that if Venus will be sped up to below 56h per rotation it would regenerate it's intrinsic magnetic field which should be near earth levels.
And while Venus does have higher gravity than Mars, it's still lower than Earth's, and overall the delta V for venus insertion orbit is slightly lower than what you need for Mars.
"Additionally the current theory is that if Venus will be sped up to below 56h per rotation it would regenerate it's intrinsic magnetic field which should be near earth levels."
That's great and all, but how exactly do we realistically speed up the rotation of a _planet_?
One of the more "probable" and more or less energy sane suggestions would be using mass drivers to eject the atmosphere at high speeds to induce spin.
The mass of the venusian atmosphere is high enough for this to actually work and still leave you a lot of atmosphere to work with, it will take 20-30 years but it still doable.
And pointing those canisters at Mars or the moon. Once you've hit Venusian escape velocity you might as well move that atmosphere somewhere else that needs it.
But compressing acidic gasses makes the corrosion problem worse, doesn't it? How do you deal with that?
https://en.wikipedia.org/wiki/Atmosphere_of_Venus#Induced_ma...
Additionally the current theory is that if Venus will be sped up to below 56h per rotation it would regenerate it's intrinsic magnetic field which should be near earth levels.
And while Venus does have higher gravity than Mars, it's still lower than Earth's, and overall the delta V for venus insertion orbit is slightly lower than what you need for Mars.