Mass Relay

Mass Relays are a network of devices in space usually located within a star system that allows interstellar travel. The Mass Relay system transports ships instantaneously to another relay anywhere within the network. There are collections of nodes that allow the networking of the relays to operate and pass on information to the other relays across the galaxy. Built by the Protheans the relays are easy to use and found on nearly every system of possible interest. The relay found within the Solar System was located within Charon, Pluto's moon underneath masses amounts of ice. Humans found it from the information located within the cache found on Mars.