De Sitter space

• Higher-dimension meta-etheric space within which all known multiverses form and are located (TTN Novel: The Red King)
  • Named for the n-dimensional mathematical construct developed by Willem de Sitter and Albert Einstein, and independently by Tullio Levi-Civita
    • This construct is the maximally-symmetric vacuum solution to Einstein's field equations, and in a sense is thus the generic description of a given n-dimensional spacetime otherwise empty of matter and energy