Midway space station

The Midway space station is a space station located between the Milky Way and Pegasus galaxies, serving as the midpoint of the McKay-Carter Intergalactic Gate Bridge.

Interior
Structurally, the station was still built around the two Stargates, and its interior was dominated by a single, expansive gate room. However, isolated rooms had been installed along either side of the structure, divided into two floors. The gates themselves were located in between these levels, accessible by ramps like in Stargate Command. The other rooms included small living quarters for the personal and travellers between the galaxies as well as at least one weapons room. Stargate operations were monitored by a control room on the upper level of the station. There also exists an air lock which includes space suits and a Puddle Jumper in case of an evacuation.

History
At the time the gate bridge was completed in 2006, the space station existed as a skeletal framework built around two Stargates, the terminal points of the Milky Way and Pegasus sections of the gate bridge. Enough space was provided for a Puddle Jumper to rest in between the two gates. When the Asurans briefly took control of Atlantis in 2006, General Hank Landry made plans to destroy the still-incomplete station with a Mark IX warhead. This plan was however not carried out and construction of the station continued.

By late 2007, the station had been completed to the point that it supported life; the final stages of its construction were personally supervised by Colonel Samantha Carter and Doctor Bill Lee. During the efforts, the artificial gravity briefly failed, but was eventually repaired.

It was possible to communicate in real time between the Midway station and locations in the Pegasus; when Atlantis went missing following its departure from Lantea, the Apollo kept communications with the Midway station to assist in locating the missing city.

After a virus breakout on Atlantis, travel between the galaxies was conducted solely over the Midway station, with a 24-hour quarantine imposed on every traveller.

While the Atlantis Expedition worked together with a Wraith (later named "Todd"), he hacked into McKay's computer and found out about the station. He shared this informations with other Wraith, who, several months later, were able to dial the station and conquered it. Afterwards a Wraith team was sent to Earth. Before more Wraith could be sent to the Tau'ri homeworld, Col. Sheppard and a strike team defeated all the Wraith on the station but during this process the self destruct system was inadvertently activated by Kavanagh. Since it couldn't be stopped the station crew was evacuated on a jumper and later rescued by the Daedalus.