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10 Horrifying Theories on What's Beyond The Observable Universe - YouTube

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What lies beyond the edge of everything we can see? These 10 theories push cosmology to its most unsettling limits — and some answers are more terrifying than the void itself.

Multiverse TheoryEternal InflationSimulation HypothesisCosmological Horizon

Theory Briefing

  • The Observable Universe stretches 46 billion light-years in every direction — but the multiverse hypothesis suggests it may be just one bubble in an infinite foam.
  • Eternal inflation theory proposes that new universes constantly spawn beyond our cosmic horizon, each with potentially different physical laws.
  • Some theories suggest the universe may be a simulation or exist within a larger structure, raising deep questions about the nature of reality itself.