What is the constituent material of the universe?

In summary, the universe is composed of approximately 5% baryonic matter, 25% non-baryonic matter, and 70% dark energy. While there are various theories proposed by physicists and astronomers to describe dark matter and energy, none have been confirmed by observation. The most commonly accepted explanation for dark energy is the presence of a small cosmological constant in Einstein's general relativity, but there are still unresolved issues regarding its size. For more information on dark matter and energy, you can refer to the article hep-ph/0312013 from arXiv.
  • #1
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
 
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  • #2
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.
 
  • #3
What is dark energy? do you have any links that would be able to help me out in understanding it?
thanks
 
  • #4
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.
 

1. What is the constituent material of the universe?

The constituent material of the universe is a combination of matter and energy. This includes elements such as hydrogen, helium, and other particles that make up all matter in the universe.

2. How much of the universe is made up of visible matter?

Only about 5% of the universe is made up of visible matter, which includes stars, planets, and other objects that can be seen with telescopes.

3. What is dark matter and how much of the universe does it make up?

Dark matter is a type of matter that does not interact with light or other forms of electromagnetic radiation, making it invisible to telescopes. It is estimated that about 27% of the universe is made up of dark matter.

4. What is dark energy and how does it affect the universe?

Dark energy is a mysterious force that is thought to be responsible for the expansion of the universe. It makes up about 68% of the universe and its exact nature is still not fully understood by scientists.

5. How do scientists study the constituent material of the universe?

Scientists use a variety of tools and methods to study the constituent material of the universe, including telescopes, particle accelerators, and computer simulations. They also gather data from cosmic radiation and study the effects of gravity on celestial bodies.

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