Wormholes

Wormholes (more popularly referred to as gateways) allow for quick access between worlds. Although they are naturally occuring phenomena as old as the universe itself, technological advances made to them have allowed for even speedier travel and less chance of malfunction (such as accidentally being sent far away from the planet you're traveling in or ending up in a black hole). The average travel time is a few seconds, although wormholes can operate faster or slower depending on ship traffic and maintenence state. There are stationary gateways directly on the surface of Rome only avaliable to small ships.