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  • Question
  • Not including the sun, the closest stars to earth are


  • Options
  • A. 4300 light-years away
  • B. 430 light-years away
  • C. 43 light-years away
  • D. 4.3 light-years away

  • Correct Answer
  • 4.3 light-years away 

    Explanation

    The nearest stars to Earth are in the Alpha Centauri triple-star system, about 4.37 light-years away. One of these stars, Proxima Centauri, is slightly closer, at 4.26 light-years.

     

    Of all the stars closer than 15 light-years, only two are spectral type G, similar to our sun: Alpha Centauri A and Tau Ceti. The majority are M-type red dwarf stars.

     

    Only nine of the stars in this area is bright enough to be seen by the naked human eye from Earth. These brightest stars include Alpha Centauri A and B, Sirius A, Epsilon Eridani, Procyon, 61 Cygni A and B, Epsilon Indi A and Tau Ceti.

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    • Options
    • A. 876 BC
    • B. 798 BC
    • C. 776 BC
    • D. 898 BC
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    • Options
    • A. 25 years
    • B. 30 years
    • C. 40 years
    • D. 35 years
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    • 3. India reached the final of the Davis Cup for the first time in...?

    • Options
    • A. 1964
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    • C. 1970
    • D. 1974
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    • Options
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    • Options
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    • B. Calcutta
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    • Options
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    • Options
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    • Options
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    • Options
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