DARK MATTER

 

 Dark Matter is still a hypothesis. Scientists have not yet fully observed Dark Matter. Dark matter never interacts with electromagnetic forces. Dark matter is completely invisible in ordinary light. In modern technology, it is impossible to detect dark matter. Some scientists believe that dark matter exists. Our entire universe is made up of 6% dark energy, 26% dark matter, and the remaining 5% normal matter. Dark matter and antimatter are not the same thing. We know that baryonic matter is made up of electrons, protons and neutrons. Most likely dark matter is composed of baryonic or non-baryonic matter. Most scientists believe that dark matter is made up of non-baryonic matter. If we do not see dark matter, how do we know that dark matter exists? Scientists have been able to determine the mass of large objects in space through research on their movements. Astronomers tested some spiral galaxies in the 1970s. They see that the stars in the center of the galaxy are moving much faster than outside. Where all the stars were supposed to move at the same speed. This test shows that a galaxy has much more mass than the total mass of its stars. We can take this extra mass as dark matter. Alpha magnetic spectrometer detects more than 100 billion cosmic rays from the ISS. From this test some extra amount of positron is measured. It is assumed that this extra amount of positron came from dark matter. Maybe one day we can really figure out the whole secret of Dark Matter

     Md.Shanzid Hasan Rupom