Hyperspace

Hyperspace, also known as darkspace by the Yuuzhan Vong, was a state of existence that starships used to travel faster than the speed of light. It could be described as a tunnel through space-time, but scientists did not completely understand how hyperspace worked. What was known, however, was that starships could travel through hyperspace at immense speeds, far greater than standard light speed. This would sometimes allow ships to travel across the galaxy in a matter of hours, rather than years.

Other meanings of hyperspace

 * Hyperspace!
 * Hyperspace Fever