Will the encounter with Venus come on the way in towards Mercury or on the way back outward into the Solar system? Who or what will be living on or near the runaway green house planet Venus? What will be the problems caused for both worlds by the encounter, and how can they be overcome?
This task is in working out the details of how mysterious gravitational beams or waves from deep space, or perhaps even from another adjacent space-time continuum, modify the orbital trajectory of the Earth/Moon system, inward to slingshot about the Sun, so as then to shoot on outward along a grand tour of the Solar System, during the next planetary alignment. -And how all of this comes to pass on Earth and on the Moon...
What is the future Earth like, even before the calamity?
When is the next planetary alignment, the time in which 'Rogu Earth' must be set?
Orbit catastrophically perturbed by a mysterious gravity ransmissions from deep space, the Earth / Moon system is slingshotted close to the Sun, and out into a Grand Tour of the Solar System, in the far future, at the next planetary alignment, to encounter each planet in turn, now populated by different PostHuman GELFs and AIs.
Genre: Hard Science Fiction