Fuel Pathing is the process of laying down fuel pellets (usually a Deuterium/Tritium mix coated in ice) along spacecraft routes to allow vessels on the route to reduce fuel weight. Ships with specially designed magnetic intake scoops can guide in the pellets and use the high velocity impact to generate plasma for thrust. A ship that uses this as its main form of propulsion only needs a light secondary engine and fuel load for maneuvering and to get it up to minimum impact speed, allowing it travel many times faster than it would otherwise be able to. The downside is that use of these paths is expensive, since they have to be periodically replenished by solar sail drones cycling from the nearest source of water, fuel, and tracking sensors.