Gravitanium, lasers, railguns and space colonies are just a normal stage of advancement for Erinaum, in comparison, it's like the technology of cell phones today; it's been around for a while. Erinamese ships can travel at near the speed of light, though a breakthrough on the GnFTL Drive looms. Erinaum is now looking for ways to use probability gates to act as portals. (Think as a hole in space-time that connects with another hole in space-time somewhere else, except that when thinking in terms of probability, you must think of space-time as a folded piece of paper, and the probability gate as using a hole puncher through both sheets. While the piece is folded, the distance between the entrance and the exit is very little. When the paper is unfolded, we realize that thinking 4th dimensionally, we appear to jump from one place in space to another without traveling the distance imbetween. In other words, a sub-spacial portal.
Khonia has ships that travel at the speed of light, and has also constructed a warp gate between the Sirius system and the Sol system.
Also, sorry for going off-topic with my dimensional rant.