Is there an unseen part of the universe older than the known universe?

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Discussion Overview

The discussion centers on the concept of whether there exists an unseen part of the universe that is older than the known universe, particularly in relation to the Copernican principle and the implications of the cosmic horizon. It explores theoretical perspectives on the universe's origin and structure.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • Some participants propose that the universe arose from a singularity 13.8 billion years ago and is expanding indefinitely.
  • There is a suggestion that the Copernican principle may imply that we inhabit a small part of a larger cosmos that extends beyond the cosmic horizon.
  • One participant questions whether the discussion is seeking opinions or the mainstream scientific view regarding what lies beyond the observable universe.

Areas of Agreement / Disagreement

The discussion remains unresolved, with multiple competing views on the nature of the universe beyond the observable limits and the implications of the Copernican principle.

Contextual Notes

Participants have not reached consensus on the existence or characteristics of any unseen parts of the universe, and there are unresolved questions regarding the nature of the cosmic horizon.

cjackson
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The best theories have the universe arising from a singularity 13.8 billion years ago, and have it expanding, becoming increasingly dilute and frigid for eternity. Do you think the Copernican principle holds for the universe and that we inhabit a small part of a vaster cosmos permanently beyond the cosmic horizon? Our observable universe had a beginning, but do you think what if anything lies beyond the horizon is older?
 
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Do you think the Copernican principle holds for the universe and that we inhabit a small part of a vaster cosmos permanently beyond the cosmic horizon? Our observable universe had a beginning, but do you think what if anything lies beyond the horizon is older?
I suggest you start by reading this thread https://www.physicsforums.com/threads/effort-to-get-us-all-on-the-same-page-balloon-analogy.261161/

After you read that thread, if you still have questions, you can start a new thread with more focused questions in the cosmology forum.
 
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Are you asking for peoples' opinions, or for the mainstream view of what's beyond the observable universe?
 
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