Space bridge
The space bridge appears in several Transformer continuities. The exact properties of the space bridge vary, but typically they serve as a more convienient means moving Transformers from one planet to another than the traditional means of space travel.
Space bridges are nonetheless distinct from Transwarp in that their primary function is movement through space, not time, though the time taken to traverse a space bridge seems to depend on the technology used.
Generation 1 Cartoon
First appearing in the G1 episode Transport to Oblivion, the Space Bridge was employed by Shockwave at Megatron's command, as a means of moving Energon Cubes from the Earth to the Decepticon base on Cybertron, and presumably to bring Decepticon reinforcements to Earth.
In the animated G1 continuity, space bridge travel appears to be virtually instantaneous. For some reason, the space bridge on Earth appears to employ some kind of bizarre train contraption. At the Cybertronian end, it resembles an elevator.
Marvel Comics
(Note: Events from the UK-only comic stories are in italics.)
The space bridge was built by Straxus's Cybertronic Decepticons, in response to the discovery that Megatron's lost group of Decepticons was alive and had set up operations on Earth. The bridge, which resembles a normal Earthen suspension bridge when not in use, has two halves; one which which remains stationary on Cybertron, and another which teleports to Earth. Passing through the bridge's central arch transports objects across vast distances, instantly and painlessly. Although a properly functioning space Bridge is a far more pleasant mode of transportation than the more fuel-efficient Autobot version, the Trans-Time Dimensional Portal, an improperly calibrated space bridge will annihilate any object or being who attempts to pass through its arch.
The original space bridge was built from the vast body of Spanner, a neutral scientist who had been captured by Straxus's forces and forced to design the Bridge. After the space bridge was almost completely destroyed, a new Bridge was built to replace it.
Robots in Disguise
Dreamwave Generation 1 Comics
Unicron Trilogy
Space bridges are the main mode of traveling in the Unicron Trilogy.
