500,000,000 BCE

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500,000,000 BCE


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  • Over 500,000,000 years ago, the Precursors were stated by the Gravemind to have created the Domain,[1] coalescing the sum of their knowledge—encompassing a hundred billion years—into a unified reservoir integrated into their many neural physics artifacts in the Milky Way galaxy. However, the Domain may have been first created long before this, as Forthencho, acting as a messenger for the Gravemind, later stated that it had existed for many billions of years.[2]


  1. ^ Halo: Silentium, pages 208-209
  2. ^ Halo: Silentium, page 322