What is beyond the edge of the universe?

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SUMMARY

The discussion centers on the concept of what lies beyond the edge of the universe, with participants debating the nature of the universe's expansion. The prevailing theory asserts that there is no edge to the universe, as illustrated by the Balloon Analogy, which suggests that traveling in one direction will eventually lead back to the starting point. The Hubble Constant is mentioned as a key factor in understanding the universe's expansion, which is believed to occur at the speed of light. The conversation highlights the complexities of cosmological theories and the implications of an infinite universe.

PREREQUISITES
  • Understanding of the Hubble Constant
  • Familiarity with the Balloon Analogy in cosmology
  • Basic knowledge of dark matter and its role in the universe
  • Awareness of the Doppler effect and its significance in astronomy
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  • Research the Hubble Constant and its implications for cosmic expansion
  • Explore the Balloon Analogy and its application in cosmological models
  • Study the role of dark matter in shaping the universe
  • Investigate the Doppler effect and its relevance to the observation of distant galaxies
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Astronomers, cosmologists, students of physics, and anyone interested in understanding the nature of the universe and its expansion.

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Guys, what do you think is beyond the edge of the universe? There are a lot of theories, and I believe that the universe expands the same speed as light because if it goes any slower, it would meet. I think light interacts with dark matter to form a "boundary" of the universe in form of pure energy. Infinite universe makes no sense because then anything would be possible. BUT what would be beyond that edge?? What do you guys think?
 
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Welcome to PF!

Sorry, but there are no theories about what is beyond the edge of the universe because by far the prevailing theory holds that there is no edge. The simplest...mostly accurate... way to visualize it is that if you fly far enough in one direction you will eventually return to where you started.

We have a ton of threads on the subject in the cosmology section...where I'm moving this thread to...have a read of the Balloon Analogy thread at the top of the forum.
 
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According to actual theories there is no such thing as an edge of the universe.
It was proved quite some years ago (through doppler effect i think) that the universe is expanding, but I'm not really sure about the expansion speed; I'll have to check out.

Edit: didn't notice someone already answered, pardon ^^
 
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KoreanSniper0720 said:
Guys, what do you think is beyond the edge of the universe? There are a lot of theories, and I believe that the universe expands the same speed as light because if it goes any slower, it would meet. I think light interacts with dark matter to form a "boundary" of the universe in form of pure energy. Infinite universe makes no sense because then anything would be possible. BUT what would be beyond that edge?? What do you guys think?
'The Universe'. most used definition of the word is 'everything that exists'.
There cannot be something outside of it by that definition.
The question is similar to 'What happens if we go to North Pole, then continue to go North.'
 
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KoreanSniper0720 said:
Guys, what do you think is beyond the edge of the universe? There are a lot of theories, and I believe that the universe expands the same speed as light because if it goes any slower, it would meet. I think light interacts with dark matter to form a "boundary" of the universe in form of pure energy. Infinite universe makes no sense because then anything would be possible. BUT what would be beyond that edge?? What do you guys think?
I recommend the link in my signature
 
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Thread closed pending moderation.

Edit: several problematic posts have been removed and the thread will remain closed
 
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