Thanks for that Buck.
I also like applying an approach that our craft can travel at 100 times the speed of light, to help out
that demonstrates inter gallactic travel as in si fi is just a wild idea...M31 being then 20,000 to 25000 years away .,or if you burn only a gram of fuel per 100000 klms the wild payloads that come into play.
Thank you so very much for your contribution I certainly enjoyed it and no doubt as would others.
Alex