The Space

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Across
  1. 4. Number of Planets in the sky
  2. 5. Star of the Solar System
  3. 6. Planets going around the sun
  4. 7. Rocky objects with glowing tails
  5. 9. The first four planets
  6. 10. A satellite that orbits around our planet
Down
  1. 1. The last four planets
  2. 2. Rocky planet with very, hot atmosphere
  3. 3. Rocky objects between the inner and outer planets
  4. 5. A gas that provides energy
  5. 8. The first planet found with the telescope