What is the constituent material of the universe?

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Discussion Overview

The discussion centers around the constituent materials of the universe, including baryonic matter, non-baryonic matter, and dark energy. Participants explore theoretical frameworks and seek clarification on these components, touching on both observational and theoretical aspects.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions whether the material of the universe is tangible and seeks answers regarding its composition.
  • Another participant estimates that the universe consists of approximately 5% baryonic matter, 25% non-baryonic matter, and 70% dark energy, noting that various theories exist but lack verification through observation.
  • A participant asks for resources to better understand dark energy, indicating a need for further clarification on the topic.
  • In response, a participant references a specific article from arXiv that discusses non-baryonic matter and dark energy, mentioning that the favored explanation for dark energy involves a small cosmological constant in Einstein's general relativity, while also highlighting issues related to the magnitude of this constant.

Areas of Agreement / Disagreement

The discussion reflects multiple competing views regarding the nature of dark energy and non-baryonic matter, with no consensus reached on the explanations or implications of these components.

Contextual Notes

Participants reference theoretical estimates and ongoing debates about the nature and implications of dark energy and non-baryonic matter, indicating unresolved issues related to observational verification and theoretical consistency.

FUNKER
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What is the constituent material of the universe? Is the material all exists on tangiable?
please any answers will aid me thanks
 
Space news on Phys.org
Current estimates are that the universe is about 5% baryonic (ordinary) matter, about 25% non-baryonic matter, and 70% dark energy. Physicist and astronomers have proposed various theories to describe the two latter components, but nothing has yet been verified by observation.
 
What is dark energy? do you have any links that would be able to help me out in understanding it?
thanks
 
For the latest on non-baryonic (dark) matter, hep-ph/0312013 from arXiv (use google to get arXiv). In this article are references to dark energy as well. The most favored explanation for dark energy is the presence of a small cosmological constant in Einstein's general relativity. However, there are some serious problems relating to the size of the constant. For dark energy, it is about 50-60 orders of magnitude smaller than other theory expects.
 

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