The Odyssey is the second Deep Space Carrier built by the United States and is operated by the United States Air Force. It replaced Prometheus as Earth's primary planetary defense and exploration vessel in the Milky Way. The Odyssey is currently under the command of Colonel Jonathon "Yoda" Harrison and is home of the 24th Space Deployment Group which includes the 141st Tactical Fighter Squadron and the 84th Operations Support Squadron.
Atlantis (also referred to as the Lost City of the Ancients and the City of the Ancestors) is a city-ship built by the Ancients several million years ago. Atlantis was originally located in the Pegasus Galaxy, but now resides on the dark side of the moon in the Milky Way.
Aígyptos is a beautiful paradise that was originally charted by Colonel Samantha Carter. Settled in a quiet corner of the Milky Way Galaxy it appears as if the planet has been untouched by the enemies that the Stargate Program has faced in the past, making it an ideal planet for settlement.