A team of researchers from India, Japan and Europe have detected the humming of the universe caused by ultra-low frequency gravitational waves. These waves originate from a large number of dancing monster black hole pairs crores of times heavier than our Sun. The discovery was possible by the researchers who monitored pulsars, nature's best clocks, using six of the world's most sensitive radio telescopes, including India's largest telescope uGMRT.The dancing monster Black Hole pairs are supposed...

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