Hyperspace is an alternate region of space co-existing with our own universe. The Hyperspace Drive allows spacecraft to take a “shortcut” through this alternate region when traveling points in our own universe, thus appearing to exceed the speed of light (otherwise known as FTL travel). Researching Hyperspace Drive technology allows the construction of Battleships, Battlecruisers, Destroyers, and Deathstars. All ships that use the Hyperspace Drive will have their base speed increased by 30% for each level of the Hyperspace Drive technology that is researched.
After researching the Hyperspace Drive to level 8, the propulsion systems for Bombers are automatically upgraded from Impulse to Hyperspace Drive, which doubles their base speed. From that point onward, Bombers benefit from improvements in Hyperspace Drive.