Space Russia uses Etherway Drives, which are somewhat like Warhammer 40k's Webway, only not.
The Etherway is a huge network of tubelike structures in a dimension where light speed is roughly 600mph, allowing for rapid relativistic travel with conventional drives. It's also inhabited by a variety of monstrously tentacled things.
Unlike, for instance, Hyperspace, entry and exit points within the Etherway don't nessecarily correspond to points within realspace. Traveling a relatively short distance within the Etherway may send you to another galaxy, while it may be necessary to go quite a long way to get to a neighboring system.
And that's why the Russian Empire has its colonies scattered randomly all over the galaxy.
It's also necessary to keep detailed and accurate maps of the Etherway to avoid getting lost, because wandering an eternal labyrinth of endless tubes is not a fun way to go out.







