According to this article[0], after losing its magnetic field, Mars lost its atmosphere over the course of "only a few hundred million years" (because at that t

According to this article[0], after losing its magnetic field, Mars lost its atmosphere over the course of "only a few hundred million years" (because at that time, solar wind was stronger than it is now). Even if one were to accept the premise that geothermal energy production would ultimately stop our magnetic field (which I don't), "the long run" here is a very, very, very long time from now. [0] https://www.sciencefocus.com/space/how-did-mars-lose-its-atmosphere https://www.sciencefocus.com/space/how-did-mars-lose-its-atm...