Albert Einstein in 1916 proposed the existence of gravitational waves as an outgrowth of his ground-breaking general theory of relativity. Scientists described the universe s gravitational wave background as the equivalent of hearing the hum of a large group of people talking at a party, without being able to distinguish any individual voice.
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Astronomers reveal evidence of universe s background hum france24.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from france24.com Daily Mail and Mail on Sunday newspapers.