Adrift : STARGATE ATLANTIS SEASON FOUR ....

 

Season Four

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Cast Members

Space Ships

Alien Planets

Alien Races

Technology

Miscellany

Previous Episodes

 Episode - 401

Episode - 402

Episode - 403

 Episode - 404

 Episode - 405

 Episode - 406

 Episode - 407

 Episode - 408

 Episode - 409

 Episode - 410

 Episode - 411

 Episode - 412

 Episode - 413

 Episode - 414

 Episode - 415

 Episode - 416

 Episode - 417

 Episode - 418

 Episode - 419

 Episode - 420

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EPISODE NUMBER - 401
ORIGINAL U.S. AIR DATE - 09.28.07
WRITTEN BY - Martin Gero
DIRECTED BY - Martin Wood
GUEST STARRING - Torri Higginson (Elizabeth Weir), Jewel Staite (Jennifer Keller), David Nykl (Radek Zelenka), Michael Beach (Abe Ellis), Bill Dow (Dr. Lee), Linda Ko (Nurse), Surin Narula (Young Doctor), Yee Jee Tso (Systems Tech), Chuck Campbell (Technician), Rick Wong (Med-Tech), Shaw Madson (Matthews), Gerry Durand (Captain Levine), Jon Johnson (Pilot), Colin Decker (Pilot), Craig Fraser (Pilot)
Floating in deep space with the city's protective shield failing, the team must do all they can to keep Atlantis alive. A radical injury threatens Dr. Weir's life. 

ANALYSIS

A Stargate needs to remain in a relatively fixed location in space in order to be able to successfully dial out and connect to another gate. If a gate is located on board a ship -- including the city of Atlantis -- the city must more or less come to a stop (or at least not be moving too quickly) in order to dial out or receive an incoming wormhole.This is because the Stargate's dialing system uses relatively fixed points in space (denoted by star constellations) to identify a destination, as well as a symbol specific to the initiating gate's point of origin. If the gate is moving too quickly, at least its point of origin would be subject to change. (This is also why Stargate Command had to calculate for thousands of years of interstellar drift when correcting gate addresses from the original Abydos cartouche discovery ten years ago [SG-1: "Children of the Gods"].)This is consistent with the use of Stargates on board ships in past episodes, including Stargates placed on board Goa'uld motherships (SG-1: "Within the Serpent's Grasp," "The Serpent's Lair").

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