Slipstream space,slipspace,subspace,or Shaw-Fujikawa space refers to the eleven non-visible infinitesimal dimensions used for faster-than-light travel. Making a transition from one place to another via slipspace is known as a "slip" or "jump."

Slipspace is a hyper-compressed multidimensional space separate from our own reality. To the human eye, slipspace appears pitch black, because there is nothing in the visible spectrum to see.

Shaw-Fujikawa engines allow ships to leave normal space and plow through Slipspace. Slipspace drives use particle accelerators to rip apart normal space-time by generating micro black holes. These holes are evaporated via Hawking radiation in nanoseconds. The real quantum mechanical "magic" of the drive lies in how it manipulates these holes in space-time, squeezing vessels weighing thousands of tons into Slipspace. Within the planck length, micro slipspace ruptures are known to exist and particles such as tachyons that are smaller than the planck are known enter and exit of slipspace which is responsible for the strange physics-breaking properties of the particle. It is also known that time can be extremely distorted within slipspace "anomalies" which could cause a starship to travel back or forward in time but the chance of its occurance is extremely rare.