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  1. Halley's comet appears once in a period of ________

  2. A.

     24 years

    B.

     32 years

    C.

     76 years

    D.

     84 years

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    Answer : Option C

    Explanation :

    Halley's comet will next appear in the night sky in the year 2062. It orbits the sun every 75-76 years, so this is the time between appearances. Halley's comet was recorded by Edmund Halley in 1682. It was seen again in 1758, 1835, 1910, and 1986.


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