What if the universe as we know it was larger than we expected. What if there was a whole other dimension, in addition to the three we are already familiar with. Physics suggests that antimatter and regular matter should have been created in equal amounts, yet we find that antimatter is almost non-existent considering the quantities of matter that we have "available". It has been theorized that antimatter has been trapped in large quantities within hyperspace which is why gravitational fields are so much weaker than other fundamental forces in what is now defined as, Normal Space.
The Jump Drive
The Jump Drive is the pinnacle of human development and represents the next step in the growth of our species. While there are naysayers Jump Drives will eventually make both the Jump Gates and the Trade Lanes obsolete. There are limitations however.
Even though gravitational fields are weak in Normal Space within Hyperspace they can affect trip time, and even length. Bodies that have stronger gravitational fields allow for longer rides though hyperspace. A spacecraft traveling from a high-mass to a low mass may find itself unable to take the same route back. Planing must be done to ensure that stranding doesn't take place. It is possible to disengage the Jump Drive in the middle of a journey. However it becomes substantially more difficult to reenter Hyperspace the farther from a gravitational body one is.