Is the universe large and finite, or infinite?

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SUMMARY

The discussion centers on the nature of the universe's size, specifically whether it is finite or infinite. Key points include the Big Bang Hypothesis, which suggests the universe may be large but finite, and insights from physicist Sean Carroll, who posits the possibility of an infinite universe. The current understanding indicates that the universe's size and shape remain unknown, with the potential for it to be finite yet unbounded or infinite from its inception.

PREREQUISITES
  • Understanding of the Big Bang Hypothesis
  • Familiarity with cosmological principles of expansion
  • Knowledge of the Copenhagen interpretation in quantum mechanics
  • Basic grasp of the concepts of finite and infinite sets
NEXT STEPS
  • Research the implications of the Big Bang Hypothesis on cosmic expansion
  • Explore Sean Carroll's theories on the infinite universe
  • Study the Copenhagen interpretation and its relevance in modern physics
  • Investigate the mathematical models of finite versus infinite universes
USEFUL FOR

Astronomers, physicists, cosmologists, and anyone interested in the fundamental questions of the universe's size and structure.

Luciano Kurban
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Dear Sir,

If we consider the Big Bang Hypotesis , the age of the universe and the rate of expansion ogf space, the Universe could be very large , but finite.
But Prof Sean Carrol said , in a lecture , that there's a possibility of Infinite Universe.
Please elaborate.
 
Space news on Phys.org
Is the Copenhagen interpretation valid nowadays ?
 
Please ask only one question per thread. Your two questions have nothing to do with each other and this will cause confusion.

I will assume the thread is to be on the first question.

What is there to elaborate? The size and shape of the universe are unknown. The universe might be finite but unbounded or it might be infinite. If it is finite, the shape is unknown.

If it is infinite now, it was infinite at the earliest times (finite things don't become infinite) and this is something that is difficult to imagine for some people, that it could START at infinite size.

EDIT: Also, I encourage you to use subject lines that have some meaning. "Mr." is not a helpful subject line
 

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