space crossword

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Across
  1. 5. when something moves in a circle around something
  2. 7. our ___________ has got 8 planets and a star
  3. 8. the earth is a _______
  4. 10. a journey with no return
  5. 12. to move from somewhere to another place
Down
  1. 1. everything is inside the ___________
  2. 2. the gas surrounding a planet is called the
  3. 3. vehicles we use in space to move
  4. 4. someone who works in space
  5. 6. the empty area between planets and stars
  6. 9. it has got thousands of solar systems
  7. 11. oxygen is a ____ that we breathe