Is there more to the universe than what we can see?

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SUMMARY

The discussion centers on the existence of luminous matter and dark energy beyond the observable universe. Participants assert that luminous matter exists outside the visible universe, countering claims that the universe's expansion is solely due to dark energy. The conversation highlights misconceptions about dark matter and energy conservation, emphasizing that dark energy does not emerge from nothing. Additionally, the limitations of observational cosmology are acknowledged, particularly regarding the finite speed of light and the inability to falsify claims about the universe's structure.

PREREQUISITES
  • Understanding of observational cosmology
  • Familiarity with dark matter and dark energy concepts
  • Knowledge of the cosmic microwave background radiation
  • Basic principles of energy conservation in physics
NEXT STEPS
  • Research the role of dark energy in cosmic expansion
  • Study the properties and implications of dark matter
  • Explore the cosmic microwave background radiation and its significance
  • Investigate the limitations of observational cosmology and the finite speed of light
USEFUL FOR

Astronomers, physicists, and anyone interested in cosmology and the fundamental nature of the universe will benefit from this discussion.

seto6
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was just thinking if no luminous matter exist beyond the visible part of the universe.
then that indicated that temperature beyond visible part is 0k, then universe expands b/c of dark energy...cosmic wave background noise be a candidate for dark energy since it is the highest radiation in the universe.. the thing about dark matter is in it violating conservation of energy.. how can dark energy come out of no where?.
 
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Sorry, but what you have written really makes no sense at all. Maybe try again using proper punctuation and complete sentences.

was just thinking if no luminous matter exist beyond the visible part of the universe.
Luminous matter certainly exists beyond the observable universe.

then universe expands b/c of dark energy

The universe does not expand because of dark energy.

cosmic wave background noise be a candidate for dark energy since it is the highest radiation in the universe
This doesn't make sense.

the thing about dark matter is in it violating conservation of energy
This doesn't make sense. Dark matter doesn't violate conservation of energy.

how can dark energy come out of no where?.
Why do you think dark energy comes out of nowhere?
 
Last edited:
nicksauce said:
Luminous matter certainly exists beyond the observable universe.

There is no way to falsify the existence of anything beyond the "observable universe" so for all intents and purposes there is no saying "certainly".
 
dst said:
There is no way to falsify the existence of anything beyond the "observable universe" so for all intents and purposes there is no saying "certainly".

There is also no way to prove that Earth is not exactly in the center of universe, and that nothing exist outside of our observable patch. But that doesn't make anyone believe that it is so. Observational cosmology is limited with finite speed of light.
 

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