Solar System

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Across
  1. 5. Molten rocks
  2. 7. Farthest planet from the Sun
  3. 8. Visible surface of the Sun
  4. 10. Planet having blue colour due to presence of methane gas
  5. 11. Center of the Sun
  6. 12. First manned spacecraft to land on the moon
Down
  1. 1. When about three-quarter of the moo is lighted
  2. 2. Huge, round depression on the moon's surface
  3. 3. Planet having rusted iron dust
  4. 4. Second full moon in a month
  5. 6. Hottest planet of the solar system
  6. 9. Thickest layer of the Earth