The Search for Dark Matter

For Prelims

  • Many physicists strongly believe that the entire visible part of the universe forms only 5% of all matter in it. They believe the rest is made up of dark matter and dark energy.
  • What is Dark Matter
  • Dark matter is made up of particles that do not have a charge and do not emit light.
  • LUX-ZEPLIN (LZ) is the most sensitive dark matter detector in the world. In Arizona USA.
  • Four fundamental forces of Universe: strong nuclear force, weak nuclear force, electromagnetic force, and gravitation.
  • Dark Matter is detected by the discrepancy between the calculated and observed value of velocities in rotating galaxies.
  • Bullet cluster: formed through the merging of two galaxy clusters.

 Source The Hindu