...and turn it into a giant spaceship by alternately using it to repel itself or align with the sun's magnetic field - a sort of hotwiring the process it already uses to align itself with the sun.

The earth could then be moved into an entirely new orbit at a distance whereby the radiation would be minimized. However, this would be a temporary solution as at a certain point the sun will only be emitting lethal radiations. The process of tuning it might also alter drastically the earth's atmospheric density among other things.

That is why I asked Mr. AtoZ to bring me back to this scientifically limited, yet pivotal, time period. I'm having a ball!

SDAI-Tech1

PS It's not really five billion years either - it's far shorter than anyone suspects - it's much closer to 120 million years and the without the valiant latter era shielding efforts it would already be completely uninhabitable just five million years from now as the first stages of change drastically shorten the wavelength of much of the sun's radiation.

;-)