Void Drive

Drive also known as Jump Drive. Accidentally created, and even known remaining on the very verge of technological capabilities of the most advanced Outer Colonies. It allows for to travel for a distance up to ~50ly without a measurable passage of time, which makes it the fastest known FTL Drive, in which its rivaled only by Transition Drive (which requires about 50 million times more energy to make the jump, so...).
It works in a way similar to Hyperspace Drive, which means that it rips a hole to a different dimension. It is believed that the speed of travel is caused by the fact, that the dimension the ship travels through possess no concept of 'time'. Unfortunately, only one person per million can enter it consciously and return sane.
Void has its own share of archeotechs - known as voidtechs and impossible to find in hyperspace - and its own share of insanity. Contrary to schizophrenia inducing Hyperspace, here a problem is increasing reluctance to return to Realspace. Void according to pilot testimonies is surreal... but in warm, gold, bright... and welcoming way.
Voidjumpers are immensely valuable resources for every country, not only because they offer access to unique technologies, but also because they can instantly carry a lot of objects from one place to another. Voidjumps are costly, but only because the pilots 'wear up' quite fast.