Solar System

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Across
  1. 4. The only mission to do a fly-by of all the outer planets
  2. 6. Largest moon of our solar system
  3. 8. space mission to saturn
  4. 9. Only moon in solar system to have a thick atmosphere and a rock surface
  5. 11. Which of the following is not a greenhouse gas? Methane, water vapor, Helium and Carbon Dioxide
  6. 12. The most abundant element in the molecular cloud
  7. 16. Only planet in our solar system which was first discovered theoretically
  8. 19. Long range comets originate from this cloud which is beyond Kuiper Belt Object
  9. 20. This planet has a retrograde rotation similar to Venus
  10. 21. Which of the following is not a Galilean moon? Phobos, Io, Ganymede and Callisto
  11. 22. This space mission observed collision of a comet on planet Jupiter
  12. 23. Closest space mission to planet Jupiter
Down
  1. 1. Water geyser on this moon
  2. 2. The following is not a dwarf planet, Pluto, Ceres, UltimaThule, Makemake, Haumea, Eris
  3. 3. This element gives the distinct red color to planet mars
  4. 5. The most common unit of temperature used by astronomers
  5. 7. This gas give the distinct blue color to planet Uranus and Neptune
  6. 10. Pluto is not a planet because it has not cleared its ___________
  7. 13. The only dwarf planet in the main asteroid belt
  8. 14. Space mission to this Galilean moon
  9. 15. Hottest planet in the solar system
  10. 17. The hypothesis in the formation of the solar system
  11. 18. This rocky planet has almost the same axial tilt as the earth