Re: Return journey
"Build yourself a nice whirly ship for gravity". Whirlyness not needed, just a constant acceleration of around 1g -- maybe that magical microwave propulsion system. You could get almost anywhere in the Universe within about 60 years - 30 years at 1g to get to (near enough) the speed of light, travel as required with barely any time passing then decelerate for 30 years at 1g (with the crew compartment rotated 180, of course).
Biting the hand that feeds IT
