The planet was home to an energy based life form, called "Unity", until the Goa'uld came to the planet. The beings welcomed the Goa'uld, however when they touched the "unity" they were killed, and in turn the Goa'uld gathered all the unity in one place and ended it. Only a few Unity survived. Those that did must stay on the planet, as the magnetic pull of the planet is different to that of earth, which caused the eventual break-down of one of the Unity which came to Earth.
 Key Episodes
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