Have you ever wondered what holds the universe together? What is the force that keeps galaxies from flying apart? Scientists have been pondering over these questions for a long time. And now, with the help of advanced technology and telescopes, we are closer than ever to unlocking the secrets of the universe.
What is Dark Matter?
Dark matter is an invisible, mysterious substance that makes up about 85% of the matter in the universe. It doesn't emit, absorb or reflect light, which makes it impossible to detect using traditional telescopes. Scientists can only infer its existence through its gravitational effects on visible matter.
Dark matter is believed to be the "glue" that holds galaxies together. Without dark matter, the outer stars in a galaxy would fly off into space due to the centrifugal force created by the galaxy's rotation. Scientists estimate that a typical galaxy contains about six times more dark matter than visible matter.
So, what is dark matter made of? That is the million-dollar question. Scientists have yet to determine its composition, but they have some theories. One theory is that dark matter is made up of Weakly Interacting Massive Particles (WIMPs), which are hypothetical particles that interact with regular matter only through gravity and the weak force. Another theory suggests that dark matter is made up of axions, a theoretical particle that has not been detected yet.
The search for dark matter has been ongoing for several decades. Scientists have developed sophisticated experiments to detect dark matter particles, but so far, they have been unsuccessful. However, they are not giving up yet. The search for dark matter continues, and we may soon discover its true nature.
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