Astronomy GK Questions

17. Which of the following does not belong to solar system?
  A.  Comets
  B.  Nebulae
  C.  Asteroids
  D.  Planets
Answer
Ans: B
Nebulae
18. The colour of the star is an indication of its
  A.  Temperature
  B.  Luminosity
  C.  Distance from the sun
  D.  Distance from the earth
Answer
Ans: A
Temperature
19. The planet which is called twin sister of the Earth
  A.  Mercury
  B.  Venus
  C.  Mars
  D.  Uranus
Answer
Ans: B
Venus
20. Which of the following planets is the closest to the sun?
  A.  Venus
  B.  Mars
  C.  Earth
  D.  Mercury
Answer
Ans: D
Mercury
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