Universe Ingredients: What Makes Up Our Universe?

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Discussion Overview

The discussion revolves around the composition of the universe, specifically the proportions of various components such as heavy elements, stars, neutrinos, dark matter, and dark energy. Participants explore the implications of these figures and the theories that underpin them, questioning their validity and intuitiveness.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant presents figures suggesting that conventional matter (stars, planets, black holes) constitutes only about 0.53% of the universe, with dark matter and dark energy making up the vast majority.
  • Another participant expresses skepticism about these figures, questioning the theories that led to such conclusions.
  • A third participant defends the theories behind these numbers, stating they are based on observations and are currently the best explanations available, while remaining open to new theories that align with observations.
  • Some participants acknowledge their discomfort with the unintuitive nature of theories like dark energy and dark matter, suggesting that while they accept the numbers, they feel adjustments may be necessary.

Areas of Agreement / Disagreement

Participants exhibit a mix of skepticism and acceptance regarding the figures and the theories that explain them. There is no consensus on the validity of the theories or the need for adjustments, indicating ongoing debate and uncertainty.

Contextual Notes

Participants express varying degrees of confidence in the underlying assumptions of the presented figures and theories, highlighting a lack of resolution regarding the interpretations of dark matter and dark energy.

wolram
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In an attempt to find out what our universe consists of i have
gathered these figuers.

Heavy elements, "us stuff" 0.03%
stars 0.5%
neutrinos 0.3%
free hydrogen and helium 4%
dark matter, energy 95%
--------------------------------------------------------------------------------------------------
hydrogen atoms 90% to 95%
helium atoms 5% to 10%
all other elements 1%
---------------------------------------------------------------------------------------------------
Black hole mass ratio to host cluster 0.5%
----------------------------------------------------------------------------------------------------
If these figures are correct then it is a sobering thought that all
the stars, planets, BHs and other "bodies only make up 0.53% of
the total ingredients in the universe.
 
Astronomy news on Phys.org
don't you think that it is also a suspicious thought?

doesn't that thought make you question the theories that gave birth to them?
 
Theories that gave birth to these numbers did not come out of nowhere. They are based on observations. Physicists are willing to listen to any theory that is consistent with these observations. At the moment this is what seems to work best.
 
shrumeo said:
don't you think that it is also a suspicious thought?

doesn't that thought make you question the theories that gave birth to them?
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The theories you refer to are probably, dark energy, matter,
although these theories are unintuitive they are generally
accepted, Do i question them, of course i do, i find many of
these theories are not to my liking, but these are the numbers,
maybe some adjustments are needed , others may give some
input, but i think they are in the" ball park".
 

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