Recently, scientists observed the merger of giant 'blackholes' billions of light-years away from the Earth. What is the significance of this observation?
A'Higgs boson particles' were detected.
B'Gravitational waves' were detected.
CPossibility of inter-galactic space travel through 'wormhole' was confirmed.
DIt enabled the scientists to understand 'singularity'.
Answer & Solution
Correct answer: B. 'Gravitational waves' were detected.
UPSC CSE Prelims 2019 (GS-I, Set A), Q.97. Official answer key: B.
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