P5C-353 was a planet destroyed when its atmosphere became toxic and uninhabitable. The citizens of the planet built an orb where they could remain in stasis until the orb was in a habitable environment.
- Names and Designations: P5C-353
- Number of Suns: Unknown
- Number of Moons: None
- Source of Address: Abydos Cartouche
- Introduced in Episode: 2.07 "Message in a Bottle"
- Earth Cultural/Technological Equivalent: advanced destroyed civilization
- Main Interest: Exploration
- Influenced/Dominated by: Entities of P5C-353
- History of Stargate: Unknown
Geopolitical and Structural History
P5C-353 once teemed with life. However, over a hundred thousand years ago, the atmosphere began to become toxic. The sentient species of the planet built an orb in which they kept at least some form of themselves in a type of stasis. The planet itself eventually could not support life at all, looking as barren as Earth's moon.
For all that time, the orb sat waiting for explorers to come and find the object. As was written on the surface of the orb, once the object was exposed to the atmosphere of a living world, the sentient entities would go forth and multiply.
One hundred thousand years later, SG-1 arrived on the planet in space suits via the Stargate. They found the orb sitting in a place of honor in the sole remaining building. Daniel Jackson hypothesized the orb was a message in a bottle type of time capsule, and the team took it back to Earth to study the writings on it further. Once on Earth, the orb activated and started exhibiting radioactivity.
The SGC dialed 353 and tried to send the orb back, but metal spikes protruded and implanted themselves in the concrete, also impaling Col. O'Neill. Energy from whatever source would be absorbed and feed the entities. The entities themselves were toxic to humans and corrupted the computers. Communicating through the trapped O'Neill, the entities were able to negotiate with the SGC and make a new home for themselves on P4G-881
–Aurora 06:27, 2 March 2007 (PST)