In the events of the third television series, "Stargate Universe", a third generation of stargates is discovered, which allegedly predates the model originally discovered in the Milky Way galaxy. This model, discovered as a result of a three-month expedition to unlock the stargate's ninth and final chevron, was first encountered on board the ancient research vessel "Destiny", which has been traversing the universe for several million years unmanned, and is several billion light years away from Earth. It is discovered that the Ancients constructed the vessel to be launched after a number of stargate seed ships were dispersed in the universe in order to follow in their path and stop at each planet at which a stargate was deposited. "Destiny" would then extract any relevant data from the planetary stargate in order to further complete research into an apparent signal embedded in the Cosmic microwave background radiation. This "prototype", or "beta", generation of gates has a limited range; one storyline in the series saw an exploratory team being left behind when "Destiny" jumped into hyperspace without them, requiring them to plot the ship's course and travel to various other "beta" Stargates until they found one in range of "Destiny". In addition, when a dialing sequence commences, the entire ring (as opposed to an inner track, like Milky Way-era gates) rotates clockwise and counterclockwise in an alternating pattern until the final chevron is locked and a wormhole is established. Finally, the event horizon of the wormhole also appears a slightly more silver color than later generations. Possibly due to the nature of how these stargates were deposited on hundreds of thousands of planets, no planetary DHD is present. Rather, explorers from "Destiny" are required to bring an Ancient remote control that can command the gate to dial an address in addition to other functions, presenting them with a list of accessible Stargates.