If the universe is closed - scenario question

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SUMMARY

The discussion centers on the implications of a closed universe, particularly regarding gravitational forces and the role of dark energy. It is established that if the universe is closed, gravitational forces would typically pull all matter together, potentially leading to a singular black hole. However, the presence of dark energy negates the possibility of recollapse, ensuring that the universe continues to expand indefinitely, regardless of its closed nature.

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  • Understanding of cosmology concepts, specifically closed universe models
  • Familiarity with gravitational forces and their effects on cosmic structures
  • Knowledge of dark energy and its role in universal expansion
  • Basic principles of black hole formation and behavior
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  • Research the implications of dark energy on cosmic expansion
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  • Explore closed universe models in advanced cosmology
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Astronomers, cosmologists, physics students, and anyone interested in the dynamics of the universe and the effects of dark energy on cosmic structures.

Mekon
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First post, please excuse my ignorance.

If the Universe is closed, then at the end of the expansion, micro gravity eventually pulls all objects together.
Black holes absorb more and more stars and whole galaxies and eventually each other until there is just one black hole and no matter left in the universe beyond its event horizon.
Has the space/time also shrunk along with the dissapearing matter? Or is the universe still very large?

Or am I totally off base?

Mekon
 
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Mekon said:
First post, please excuse my ignorance.

If the Universe is closed, then at the end of the expansion, micro gravity eventually pulls all objects together.
This would only be true without dark energy. There is dark energy, so there will never be any recollapse, even if our universe is closed.
 

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