Dark Matter: An Unexplained Mystery

In summary, dark matter is a type of matter that makes up about 85% of all matter in the universe and is responsible for the gravitational forces that hold galaxies together. It was first proposed in the 1930s by Swiss astronomer Fritz Zwicky, and since then, scientists have used various techniques to indirectly detect and study it. Dark matter differs from regular matter in that it does not interact with light and has different chemical properties. While its exact nature is still unknown, its study is important as it helps explain the structure of the universe and can lead to breakthroughs in our understanding of fundamental physics and the origins of the universe.
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wolram
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Would Dark matter form out of the primordial plasma at the same time as baryonic matter,
did some thing special happen to form this weakly interacting particle?
 
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  • #2
First question: most likely yes. Second question: since no one knows what it is, how it was formed is a completely open question.
 

1. What is dark matter?

Dark matter is a type of matter that cannot be seen or detected by traditional means, such as telescopes or other instruments. It is believed to make up about 85% of all matter in the universe and is responsible for the gravitational forces that hold galaxies together.

2. How was dark matter discovered?

Dark matter was first proposed by Swiss astronomer Fritz Zwicky in the 1930s. He observed that the mass of galaxies was much greater than what could be accounted for by the visible matter. Since then, scientists have used various techniques such as gravitational lensing and galaxy rotation curves to study and indirectly detect dark matter.

3. What is the difference between dark matter and regular matter?

The main difference between dark matter and regular matter is that dark matter does not interact with light or other forms of electromagnetic radiation, making it invisible. It also does not have the same chemical properties as regular matter, and its exact composition is still unknown.

4. What is the current understanding of dark matter?

While we have evidence of its existence, the exact nature of dark matter is still unknown. Scientists have proposed various theories, such as the existence of new particles or modifications to the laws of gravity, but none have been fully proven. The study of dark matter is ongoing and is a subject of intense research in the fields of astrophysics and particle physics.

5. Why is dark matter important?

Dark matter plays a crucial role in our understanding of the universe. Without its gravitational effects, galaxies would not be able to hold together, and the universe would look very different. It also helps explain the large-scale structure of the universe and the distribution of galaxies. Additionally, the study of dark matter can potentially lead to breakthroughs in our understanding of fundamental physics and the origins of the universe.

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