WASHINGTON : Scientists on Wednesday unveiled evidence that gravitational waves, the ripples in the fabric of space-time predicted by Albert Einstein more than a century ago, are permeating the universe at low frequencies - creating a cosmic background hum.The new findings show that space is awash with th
WASHINGTON : Scientists on Wednesday unveiled evidence that gravitational waves, the ripples in the fabric of space-time predicted by Albert Einstein more than a century ago, are permeating the universe at low frequencies - creating a cosmic background hum.
Einstein in 1916 proposed the existence of gravitational waves as an outgrowth of his ground-breaking general theory of relativity, which depicted gravity as the distortion of space and time by matter. Until their detection in 2016, scientists had found only indirect evidence of their existence, beginning in the 1970s.
The gravitational wave signal was observed in 15 years' worth of data obtained by the North American Nanohertz Observatory for Gravitational Waves Physics Frontiers Center , a collaboration of more than 190 scientists from the United States and Canada.
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