Universe

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Across
  1. 2. contains many solar systems
  2. 4. stone of the universe
  3. 7. follows the planet
  4. 8. cosmic clouds
  5. 9. observing the sky
Down
  1. 1. vast immensity
  2. 3. piloting a spaceship
  3. 4. where man looking for life
  4. 5. outer space state
  5. 6. the star brightest in the night sky