Gravitational Force – UPSC GS3

  • Gravitational wave has been detected for first time
  • Scientists working with the gigantic optical instruments in the U.S. called LIGO [Laser Interferometer Gravitational-wave Observatory], have detected signals of gravitational waves emanating from two merging black holes 1.3 billion light years away arriving at their instruments on the Earth
  • This discovery verifies Einstein’s prediction and theory



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