[andys627]

We can create a magnetosphere at Lagrange point between Mars and Sun that has a tail that would protected Mars from solar radiation. Radiation from other stars is still a problem I think? https://phys.org/news/2017-03-nasa-magnetic-shield-mars-atmo...

[rbanffy]

True, but at least the magnetic field could redirect solar wind (or, at least, its protons) to impact head-on and replenish Martian hydrogen instead of pushing the atmosphere away.