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The Gravitational Waves

Gspace - Hi Friends, Great Welcome to Our G space Education Platform. Today Let we all know the interesting information about " Gravitational Waves “ Gravitational waves are 'ripples' in space-time caused by some of the most violent and energetic processes in the Universe. Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity. Einstein's mathematics showed that massive accelerating objects would disrupt space-time in such a way that 'waves' of undulating space-time would propagate in all directions away from the source. These cosmic ripples would travel at the speed of light, carrying with them information about their origins, as well as clues to the nature of gravity itself. The strongest gravitational waves are produced by cataclysmic events such as colliding black holes, supernovae and colliding neutron stars. Other waves are predicted to be caused by the rotation of neutron stars that are not perfect spheres, and possibly even the remnants of gravitational radiation created by the Big Bang. Gravitational waves themselves are invisible. They are made visible here to illustrate their propagation away from the source. Though Einstein predicted the existence of gravitational waves in 1916, the first proof of their existence didn't arrive until 1974, 20 years after his death. In that year, two astronomers using the Arecibo Radio Observatory in Puerto Rico discovered a binary pulsar, exactly the type of system that general relativity predicted should radiate gravitational waves. After eight years of observations, they determined that the stars were getting closer to each other at precisely the rate predicted by general relativity if they were emitting gravitational waves. Since then, many astronomers have studied pulsar radio-emissions and found similar effects, further confirming the existence of gravitational waves. All of this changed on September 14, 2015, when LIGO physically sensed the undulations in spacetime caused by gravitational waves generated by two colliding black holes 1.3 billion light-years away. LIGO's discovery will go down in history as one of humanity's greatest scientific achievements. Gravitational waves are ripples in the fabric of the universe, produced when mass accelerates. Because they're hard to produce, and thus conversely hard to obscure, they provide excellent probes into the most energetic phenomena in the universe. Just like different parts of the electromagnetic spectrum have different practical applications, we can use gravitational waves of different scales to probe a wide range of phenomena. CCRG scientists are involved with several observatories to identify gravitational waves from objects similar in mass to our sun from the supermassive black holes in the center of galaxies and from known pairs of stars in our own galaxy (LISA). In a few cases, multiple gravitational-wave detectors can be sensitive to the same type of source in exceptional circumstances, the same source can be identified with multiple gravitational-wave instruments. In fact, by the time gravitational waves from LIGO's first detection reached us, the amount of space-time wobbling they generated was a 1000 times smaller than the nucleus of an atom.