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

  • Context: Graduate 
  • Thread starter Thread starter seto6
  • Start date Start date
  • Tags Tags
    Expansion Universe
Click For Summary

Discussion Overview

The discussion revolves around the nature of the universe beyond the observable limits, specifically addressing the existence of luminous matter, dark energy, and dark matter. Participants explore theoretical implications and the challenges of observational cosmology.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant suggests that if no luminous matter exists beyond the visible universe, it implies a temperature of 0K and raises questions about the nature of dark energy and its origins.
  • Another participant challenges the coherence of the initial claims, asserting that luminous matter does exist beyond the observable universe and questioning the assertion that the universe expands due to dark energy.
  • A later reply emphasizes the inability to falsify the existence of anything beyond the observable universe, arguing that certainty cannot be claimed in this context.
  • Further, it is noted that observational cosmology is constrained by the finite speed of light, which limits our understanding of the universe's structure.

Areas of Agreement / Disagreement

Participants express disagreement on several points, particularly regarding the existence of luminous matter beyond the observable universe and the role of dark energy in cosmic expansion. The discussion remains unresolved with multiple competing views presented.

Contextual Notes

Limitations include the dependence on definitions of observable versus unobservable regions of the universe and the challenges posed by the finite speed of light in observational cosmology.

seto6
Messages
248
Reaction score
0
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?.
 
Astronomy news on Phys.org
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.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 17 ·
Replies
17
Views
3K
  • · Replies 13 ·
Replies
13
Views
3K
Replies
18
Views
2K
  • · Replies 19 ·
Replies
19
Views
5K
  • · Replies 13 ·
Replies
13
Views
6K
  • · Replies 13 ·
Replies
13
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 14 ·
Replies
14
Views
4K