Rocket

The Space Shuttle are a type of transportation that allows individuals or objects to go in to space or other planets. In the case of Half-life series they are involved by closing a dimensional rift.

Half-Life
During the Black Mesa Incident aliens from Xen were coming in full force as Xen military units started killing any humans they found, as the Black Mesa Personnel attempt to close the increasing dimensional rift by launching the shuttle in to space but the HECU came before they could the prepare the rocket to launch and killed all personnel there and canceled the launch. Then Gordon was continuing his journey out of the doomed facility he encounters a Security Guard who tells Gordon a scientist sent a message to Gordon that he has to take the old railway system in order to get to the launch pad and send the shuttle in to space so it can relay a message to the satellite array so it can shut the the rift closed.

List of Appearances

 * Half-Life
 * Half-Life 2: Episode Two