Indeed, awesome observations. Sometime this also happens using the "intergalactic transport network", a technical team which actually exists, exploiting low-en

Indeed, awesome observations. Sometime this also happens using the "intergalactic transport network", a technical team which actually exists, exploiting low-energy transfer trajectories. See for instance http://www2.esm.vt.edu/~sdross/papers/AmericanScientist2006.pdf http://www2.esm.vt.edu/~sdross/papers/AmericanScientist2006.... (especially its last page; sorry for linking to http) or https://www.youtube.com/watch?v=v4NTjTxdNug https://www.youtube.com/watch?v=v4NTjTxdNug.