Motion in the Universe

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Across
  1. 3. Movement of galaxies
  2. 7. Sun at centre of solar system
  3. 9. Movement of Earth causing seasons
Down
  1. 1. Path planets follow
  2. 2. Universe's accelerating motion
  3. 4. Earth's movement around the Sun
  4. 5. Force keeping planets in orbit
  5. 6. Earth's rotation causes
  6. 8. Galaxy containing our solar system