Which of the following comets comes to Earth once every 76 years? 

This question was previously asked in
RPF Constable (2018) Official Paper (Held On: 03 Feb, 2019 Shift 2)
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  1. Halley Comet
  2. Comet NK
  3. Caesar's Comet 
  4. Comet Borrelli 

Answer (Detailed Solution Below)

Option 1 : Halley Comet
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Correct Answer Halley Comet

Key Points

  • Halley's Comet, officially known as Comet 1P/Halley, is a famous periodic comet that orbits the Sun.
  • It is named after the English astronomer Edmond Halley, who studied the comet's orbit and accurately predicted its return.
  • The first recorded observation of Halley's Comet dates back to 240 BC, but its true nature as a recurring comet was recognized by Edmond Halley in 1705.
  • He calculated its orbit and correctly predicted its return in 1758, which occurred after his death.
  • The comet has since been observed during subsequent returns, including in 1835, 1910, and 1986, and its appear  in 2061.
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