Debunking Dark Energy: Where Does Energy Go in the Universe?

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Discussion Overview

The discussion revolves around the nature of dark energy and the question of where energy goes in the universe. Participants explore the implications of energy conservation, the definition of dark energy, and the relationship between energy dissipation and cosmic expansion. The conversation includes theoretical considerations and challenges to existing claims about dark energy.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • One participant questions whether dark energy could simply be regular energy dissipating in space, asking for clarification on where energy goes.
  • Another participant asserts that the burden of proof lies with the individual making the claim about dark energy, suggesting that they should learn basic physics principles.
  • A participant explains that energy is never created or destroyed but converted into different forms, often leading to higher entropy, and argues that dark energy is distinct from regular energy dissipation.
  • One participant expresses confusion about how previous answers refute the claim about dark energy, suggesting that if energy converts to higher entropy, it could imply that space absorbs energy and expands.
  • A later reply proposes that if the universe's rate of energy conversion to higher entropy is increasing, it could support the idea of accelerating expansion, while questioning if this would refute the initial claim.

Areas of Agreement / Disagreement

Participants do not reach a consensus; multiple competing views remain regarding the nature of dark energy and the implications of energy conversion and entropy in the context of cosmic expansion.

Contextual Notes

There are limitations in the discussion, including unclear definitions of energy forms, the dependence on interpretations of entropy, and unresolved questions about the mechanisms behind cosmic expansion.

nottheone
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A friend of mine thinks he is a physicist (he's not). He told me he thinks dark energy is nothing more than the regular energy of the universe being dissipated in space. Is that possible? Where DOES energy go? For every force there must be a reaction so it almost seems reasonable, energy has to go somewhere. Give me some ammo to tell him he is wrong.
 
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Since he is the one making the claim, the burden of proof falls not to you. Let him try and develop his theory; his inevitable failure will save you a lot of grief.

Also, suggest that he should learn the basic principles of physics before beginning to theorize on the fundamental nature of "Dark Energy". :wink:
 
Energy is never created or destroyed, only converted into different forms (although one of the forms it can be converted into is matter).

If you're trying to figure out where energy "goes" once it is "used", it is converted into forms which are not reusable. The canonical answer for where the energy "goes" that I usually hear is that it becomes "heat". Probably a better answer is that the energy doesn't "go" anywhere, it is just continually converted from lower-entropy to higher-entropy forms ("higher-entropy" effectively meaning "less useful").

Dark Energy is, by definition, the expansion above and beyond what would be caused by the actual "regular energy of the universe being dissipated in space". If it were regular energy dissipated in space it wouldn't be Dark Energy, it would just be Energy. Right? You don't even have to explain what Dark Energy is to say that much, it's just the semantics of the thing.

If you can explain what dark energy is they'll probably give you a nobel prize.
 
Sorry to be thick but I am not clear on how your answers refute his theory or what basic principles you are talking about. First, it is only 'dark' energy because that's what we call it. Second, if energy goes to higher entropy forms why couldn't the highest entropy be that space absorbs the energy and expands.

Would it be reasonable to say that the universe's rate of energy conversion to higher entropy is getting faster? That would fit the theory that the expansion is accelerating and if it isn't that would refute him.
 

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