Type Wormhole

Similar to a black hole, a wormhole is a gash in the Material Plane that causes a negative energy reaction. However, a wormhole is stabilized by the interaction of positive and negative energies, and the warp in reality becomes a stable passage from one point of the Material Plane to another—in other words, a one-way portal with tremendous gravitational and chronological forces.[1]

Uses in space travel

The spaceship Divinity was capable of creating massive stable wormholes using the Divinity Drive.[2]