Probability of stars in a multiverse

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The discussion centers on the probability of star and galaxy formation within a multiverse framework, contrasting the views of Martin Rees, who argues that such probabilities are low due to critical constants of nature, and Victor Stenger, who posits a higher likelihood based on interactions of these constants. Participants express skepticism about multiverse theories, emphasizing that the fundamental constants may not be arbitrarily chosen and suggesting that structure formation could be more probable than initially thought. The conversation touches on the anthropic principle, highlighting that the existence of observers does not imply a high probability of structure formation across the multiverse. Overall, the complexity of the physics involved and the speculative nature of multiverse theories leave many questions unanswered regarding the likelihood of star formation.
  • #61
I agree Gurzadyan and Penrose is a stretch. Strictly an opinion, but, it appears cosmic strings are a long shot at present.
 
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  • #62
Chronos said:
I agree Gurzadyan and Penrose is a stretch. Strictly an opinion, but, it appears cosmic strings are a long shot at present.
Well, I don't know how much of a long shot they are. They are certainly very rare, given current observational evidence. There's no question about that. But it would be a very interesting discovery if we found even one in the visible universe.
 

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