Wormhole Drive

'Wormhole Drive, or "Worm drive" as it's sometimes also known, is an FTL system similar to Warp Drive, which uses a Spacial Distortion Engine to create a wormhole through subspace, through which the ship travels. The ship itself, when using this drive system, is not actually accelerated beyond the speed of light, such as is the case with the other FTL drive systems. Instead, the ship enters what is basically a section of folded space, in the form of a wormhole, that allows a person or ship to travel great distances without being required to achieve superluminal speeds to do it. In many ways it is a close cousin of the Jump Drive, albeit not as fast, even if it is safer. The downside to wormhole drive is that, when a ship enters it, they become effectively blind, and have no way to know where they are in the universe at any time.

To find out where one is, they have to exit the wormhole, get a star chart bearing, and then jump again, resulting in long trips requiring several jumps, and subsequent course corrections, to achieve the desired destination. So it's basically a "shoot and pray" FTL technology. Tight adherence to a chronometer is also required to ensure that one exits the wormhole exactly where they want to, within several light seconds or minutes of their desired destination. An advantage of this technology, despite being more or less blind flight, is that the wormholes it creates are both stable, and predictable, and do not suffer the normal issues of FTL flight, such as planets, stars, and other gravitational bodies that might get in the way.

So, in short, as long as you're in the wormhole, you can't smash into anything in either normal space, or subspace as the wormholes that it generates naturally navigate their way around solid bodies and gravity wells, by nature always taking the safest, and clearest path (ie, path of least resistance) from source to destination.