science

What Are Gravitational Waves and How Are They Detected?

šŸ’” The Answer

  • Gravitational waves are ripples in spacetime caused by violent cosmic events.
  • They were first directly observed in 2015 by the LIGO collaboration.
  • These waves travel at the speed of light and stretch and squeeze space.
  • Detection involves measuring minuscule changes in laser beam distances kilometers apart.

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