Last culture on Earth

Three options:
blue - making Earth an spaceship could make it last forever, but what to do where there's no sun close enough?
Red - jumping from planet to planet, how many jumpings could it last?
Black - being the very last culture, te advantage of a nuclear war is there wouldn't be another one :v

Universe itself has to follow its own rules, individuals pay the price of finitude to disobey a little bit during existence.