Very Early Universe
All ideas concerning the very early universe (cosmogony) are speculative. No accelerator experiments have yet probed energies of sufficient magnitude to provide any experimental insight into the behavior of matter at the energy levels that prevailed during this period. Proposed scenarios differ radically. Some examples are the Hartle–Hawking initial state, string landscape, brane inflation, string gas cosmology, and the ekpyrotic universe. Some of these are mutually compatible, while others are not.
Read more about this topic: Timeline Of The Big Bang
Famous quotes containing the words early and/or universe:
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—George Eliot [Mary Ann (or Marian)
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—Marcus Tullius Cicero (106–43 B.C.)