Recently, scientists observed the merger of giant 'blackholes' billions of light-years away from the Earth. What is the significance of this observation?
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A medium Science & Technology multiple-choice question from UPSC Prelims 2019. Attempt it above, then check the correct answer and detailed explanation below.
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Correct answer: B. 'Gravitational waves' were detected.
The merger of black holes produced ripples in space-time detected as gravitational waves, confirming a key prediction of Einstein's general theory of relativity.
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