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Sunday, 2 June 2019

Recently, scientists observed the merger of giant 'blackholes' billions of light-years away from the Earth. What is the significance of this observation?

  By GK Planet Team       Sunday, 2 June 2019
Q. Recently, scientists observed the merger of giant 'blackholes' billions of light-years away from the Earth. What is the significance of this observation?
  1. 'Higgs boson particles' were detected.
  2. 'Gravitational waves' were detected.
  3. Possibility of inter-galactic space travel through 'wormhole' was confirmed.
  4. It enabled scientists to understand 'singularity'.
Answer: 'Gravitational waves' were detected.

It is possible for two black holes to collide. Once they come so close that they cannot escape each other's gravity, they will merge to become one bigger black hole. Such an event would be extremely violent. Even when simulating this event on powerful computers, we cannot fully understand it. However, we do know that a black hole merger would produce tremendous energy and send massive ripples through the space-time fabric of the Universe. These ripples are called gravitational waves.
  • Gravitational waves are ripples in spacetime which are created whenever objects with the mass move. They were predicted by Albert Einstein in 1916 on the basis of his theory of general relativity.
  • As gravitational waves are not created by stationary objects, they must be detected from moving systems. Sources of detectable gravitational waves include binary star systems composed of white dwarfs, neutron stars, or black holes.



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