Recently, Scientists observed the merger of giant blackholes’ billions of light-years away from the Earth. What is the significance of this observation?

[UPSC Civil Services Exam – 2019 Prelims]

(a) ‘Higgs boson particles’ were detected.

(b) ‘Gravitational waves’ were detected.

(c) Possibility of inter-galactic space travel through ‘wormhole’ was confirmed.

(d) It enabled the scientists to understand ‘singularity’.


Answer: (b)        

Explanation:

  • Gravitational waves are ‘ripples’ in space-time caused by some of the most violent and energetic processes in the Universe.
  • Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity.
  • Billions of light-years away from the earth, two black holes have collided to create a larger one.
  • Gravitational waves are created when two black holes orbit each other and merge.
  • It has a mass more than 80 times that of the Sun.
  • The resulting energy released in the form gravitational waves as the two holes spiralled in towards each other.

Consider the following statements:                                                                   The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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Consider the following statements:                                                         The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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