An example of simulated data modeled for the CMS particle detector. Image source wikipedia
Greetings, how are you steemit friends? Glad to meet you again and hopefully healthy always. In fact, over the past few days, I have been intrigued by a knowledge that ultimately forced me to seek more references and finally I also have not been able to conclude what exactly I am looking for.
A few days ago a friend tried to discuss with me about dark matter, yes, I once read it on some posts of a friend in steemit. But the discussion this time is much more interesting because it forces me to sleep late just to read more knowledge.
I admit that dark matter is a new knowledge to me, and I enjoy the whole process of reference searching that I have done, I try to share it with you in an easily digestible language that can be of benefit to you.
We know that today science has developed so rapidly, we have known the various kinds of matter contained in this universe, but is it true we really know it?
Almost every night we can see the sky decorated with various stars, very beautiful and amazing, but is it true that the whole universe we can see with the eyes? And is it true that our eyes really see the universe?
We should first know the history of the dark matter.
DARK MATTER
Map af the dark matter for a patch of sky. Image source wikipedia
A few hundred years ago, scientists did not yet know what dark matter was. This is evident from a photograph of astronomers who reveal the atmosphere of the sky filled with stars, but in certain parts of the stars are not visible. The scientists of the time argued that it is a common thing because in that part the star is not well distributed so that the region lacks stars, there is also a saying, actually, there is material that blocks our sight so that stars are not visible. Which opinion is correct?
After the 19th century ended, a French scientist Sir Henry Poincare accidentally found a conflict that is contrary to the principle of action=reaction and Lorentz Ether theory, in fact, Sir Henry Poincare is a physicist who is studying differences in mass and electromagnetic energy. Sir Henry was researching the speed of the center of gravity, he gave the electromagnetic field at the center of gravity to find whether the speed of motion remained uniform, but surprisingly, Sir Henry Poincare finally realized that the principle of action=reaction does not apply to it.
The scientists agree with the results made by Sir Henry Poincare, so as to calculate the mass of a large object. When investigating the spiral object (galaxy), the researchers suspect can see the material and assume that the material adjacent to the center of the galaxy will move faster the outer edge.
In fact, the researchers found that the star on the inside or the diagram moved at the same rate, in further research also found that the galaxy has more mass than what which is visible to the human eye.
| Collage of six cluster collisions with dark matter maps. The clusters were observed in a study of how dark matter in clusters of galaxies behaves when the clusters collide.[wikipedia] |
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Another thing found is, the galaxies need a much larger mass of objects that can be seen by the human eye. A conclusion is, the galaxy group will fly irregularly if the visible mass has conventional astronomical measurements.
The results of the study forced the scientists to recalculate and conclude that the universe has a lot of material compared to what it looks like.
The review of this research has been very clear and evolving today, but there is no clear evidence yet whether this dark matter has been detected in its radiation.
Other evidence that dark matter exists, the existence of a star arch in many galaxies and a comparison of the acceleration graph of stars versus a distance of stars from a center of the galaxy.
As we know, the Mercury is moving faster than the Neptune. But the acceleration is different from the rotation of stars and galaxies.
DARK MATTER APPROACH
To learn what the composition of dark matter is, scientists, investigate some familiar material in the universe, such as Baryonic material that has protons, neutrons, and electrons. Dark matter can I be made of the Baryonic material or even vice versa.
Some scientists assume that dark matter is made up of regular Baryonic material and can be studied on brown dwarfs and white dwarfs.
It may be that this invisible material has an important role in every process in the universe,
Some scientists also consider dark matter an important key to the enigmatic universe, an element that is needed by the universe.
It is estimated that 84.5% of the material in the universe and 26.8% of the entire contents of the universe are dark matter. wikipedia
CONCLUSION
Dark matter is a matter that is still a mystery and still needs further research on this dark matter, it is estimated that ¼ of the contents of the universe is dark matter.
We know that today nature is undergoing development because of the redshift is shown by the distant light of celestial bodies. Knowing the visible matter alone is not enough to make the development of gravity stop, or in other words, the universe needs dark matter to stop the development of gravity, or vice versa.
With the dark matter, an inconsistency of the universe due to the big bang theory can be answered.
Actually, this is still far from the conclusion that I expect, it's just that I need more references to know more about what dark matter and dark energy are, the conclusions I make to this post are just basic conclusions, and I will try to continue the discussion on the next post.
This is the only thing I can write on this occasion, over all the mistakes and lack of unintentional writing as a servant of God, I apologize.
Thanks to friends who have visited this blog and provided constructive comments, as well as scientists who are willing to sacrifice their time for a better civilization.
Active link reference:
www.wikipedia.org/materi gelap
www.wikipedia.org/energi gelap
www.cam.ac.uk
www.nationalgeographic.co.id
www.wikipedia.org/Henri Poincare
Do you love science? by respecting the work of others and not plagiarism then you are welcome to join steemSTEM by using #science tags
Best regards 
