On 25 May 2016 at 12:59, Jeffrey Schwartz wrote:

> I could see two tugs...
> One accels the cargo out for two weeks, then detaches, slides a few
> thousand KM to the side, and catches the incoming cargo, decels it to
> orbital around the destination, and picks up the new outbound.

Well, for starters, bulk transfers don't need to be at those
velocities.

Also, the path of incoming cargos and outgoing cargos *won't* be the
same.

Remember, both source and destination are orbiting the star. And in
even a mere month, planets in the life zone move a *long* ways.

--
Leonard Erickson (aka shadow)
shadow at shadowgard dot com