Big Crunch to Big Bang: Is Our Universe Eternal?

In summary, there is a concept called the "big bounce" where the universe may experience multiple Big Bangs due to quantum fluctuations, but there is currently no evidence to support this and it is more likely that the universe will continue to expand indefinitely.
  • #1
navilon
7
0
I was wondering, if the gravitational pull due to dark matter is greater and at some point the universe stops expanding and starts contracting(Big Crunch)..from galaxies to stars,from stars to planets,molecules,atoms etc.and it reaches the minimum length scale Plank (according to ST) to one single point (as the Big Bang).Is it possible from that point,due to quantum fluctuations to start expanding again?And if that is,,is it possible that our universe has experienced more than one Big Bang?
 
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  • #2
This concept is known as big bounce, see the wikipedia article and its references for more information.
 
  • #3
navilon said:
I was wondering, if the gravitational pull due to dark matter is greater and at some point the universe stops expanding and starts contracting(Big Crunch)..from galaxies to stars,from stars to planets,molecules,atoms etc.and it reaches the minimum length scale Plank (according to ST) to one single point (as the Big Bang).Is it possible from that point,due to quantum fluctuations to start expanding again?And if that is,,is it possible that our universe has experienced more than one Big Bang?

Possible, but there is zero evidence for it and everything points to continued expansion.
 

Related to Big Crunch to Big Bang: Is Our Universe Eternal?

What is the Big Crunch?

The Big Crunch is a hypothetical scenario in which the universe stops expanding and begins to contract, eventually collapsing in on itself in a massive gravitational collapse.

What is the Big Bang?

The Big Bang is the widely accepted scientific theory that explains the origin and evolution of the universe. It proposes that the universe began as a singularity and has been expanding and cooling ever since.

Is the universe eternal?

The answer to this question is still unknown. While some theories, such as the Steady State theory, propose that the universe has always existed, the widely accepted Big Bang theory suggests that the universe had a beginning and will have an end.

What evidence supports the Big Bang theory?

Several pieces of evidence support the Big Bang theory, including the observed expansion of the universe, the abundance of light elements, and the cosmic microwave background radiation. These pieces of evidence support the idea that the universe was once much hotter and denser, as predicted by the Big Bang theory.

What happens after the Big Crunch?

If the Big Crunch were to occur, it is believed that the universe would undergo a period of extremely high density and temperature, eventually leading to another Big Bang and the creation of a new universe. However, this scenario is still highly debated and is not yet fully understood by scientists.

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