Space conquest

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Across
  1. 2. Our own planet
  2. 4. Person who goes into space
  3. 7. Body gravitating around a planet
  4. 8. Celestial body like the sun
  5. 9. Attraction of bodies between then
Down
  1. 1. Natural satellite of the Earth
  2. 3. Ship used to go into space
  3. 5. Celestial body witch gravitating around a star
  4. 6. This is our galaxy
  5. 8. The star of the solar system
  6. 9. Assembly of many solar systems